diff options
Diffstat (limited to 'gcc/fortran/check.cc')
| -rw-r--r-- | gcc/fortran/check.cc | 7523 |
1 files changed, 7523 insertions, 0 deletions
diff --git a/gcc/fortran/check.cc b/gcc/fortran/check.cc new file mode 100644 index 0000000..053f856 --- /dev/null +++ b/gcc/fortran/check.cc @@ -0,0 +1,7523 @@ +/* Check functions + Copyright (C) 2002-2022 Free Software Foundation, Inc. + Contributed by Andy Vaught & Katherine Holcomb + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + + +/* These functions check to see if an argument list is compatible with + a particular intrinsic function or subroutine. Presence of + required arguments has already been established, the argument list + has been sorted into the right order and has NULL arguments in the + correct places for missing optional arguments. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "options.h" +#include "gfortran.h" +#include "intrinsic.h" +#include "constructor.h" +#include "target-memory.h" + + +/* Reset a BOZ to a zero value. This is used to prevent run-on errors + from resolve.c(resolve_function). */ + +static void +reset_boz (gfc_expr *x) +{ + /* Clear boz info. */ + x->boz.rdx = 0; + x->boz.len = 0; + free (x->boz.str); + + x->ts.type = BT_INTEGER; + x->ts.kind = gfc_default_integer_kind; + mpz_init (x->value.integer); + mpz_set_ui (x->value.integer, 0); +} + +/* A BOZ literal constant can appear in a limited number of contexts. + gfc_invalid_boz() is a helper function to simplify error/warning + generation. gfortran accepts the nonstandard 'X' for 'Z', and gfortran + allows the BOZ indicator to appear as a suffix. If -fallow-invalid-boz + is used, then issue a warning; otherwise issue an error. */ + +bool +gfc_invalid_boz (const char *msg, locus *loc) +{ + if (flag_allow_invalid_boz) + { + gfc_warning (0, msg, loc); + return false; + } + + const char *hint = _(" [see %<-fno-allow-invalid-boz%>]"); + size_t len = strlen (msg) + strlen (hint) + 1; + char *msg2 = (char *) alloca (len); + strcpy (msg2, msg); + strcat (msg2, hint); + gfc_error (msg2, loc); + return true; +} + + +/* Issue an error for an illegal BOZ argument. */ + +static bool +illegal_boz_arg (gfc_expr *x) +{ + if (x->ts.type == BT_BOZ) + { + gfc_error ("BOZ literal constant at %L cannot be an actual argument " + "to %qs", &x->where, gfc_current_intrinsic); + reset_boz (x); + return true; + } + + return false; +} + +/* Some precedures take two arguments such that both cannot be BOZ. */ + +static bool +boz_args_check(gfc_expr *i, gfc_expr *j) +{ + if (i->ts.type == BT_BOZ && j->ts.type == BT_BOZ) + { + gfc_error ("Arguments of %qs at %L and %L cannot both be BOZ " + "literal constants", gfc_current_intrinsic, &i->where, + &j->where); + reset_boz (i); + reset_boz (j); + return false; + + } + + return true; +} + + +/* Check that a BOZ is a constant. */ + +static bool +is_boz_constant (gfc_expr *a) +{ + if (a->expr_type != EXPR_CONSTANT) + { + gfc_error ("Invalid use of BOZ literal constant at %L", &a->where); + return false; + } + + return true; +} + + +/* Convert a octal string into a binary string. This is used in the + fallback conversion of an octal string to a REAL. */ + +static char * +oct2bin(int nbits, char *oct) +{ + const char bits[8][5] = { + "000", "001", "010", "011", "100", "101", "110", "111"}; + + char *buf, *bufp; + int i, j, n; + + j = nbits + 1; + if (nbits == 64) j++; + + bufp = buf = XCNEWVEC (char, j + 1); + memset (bufp, 0, j + 1); + + n = strlen (oct); + for (i = 0; i < n; i++, oct++) + { + j = *oct - 48; + strcpy (bufp, &bits[j][0]); + bufp += 3; + } + + bufp = XCNEWVEC (char, nbits + 1); + if (nbits == 64) + strcpy (bufp, buf + 2); + else + strcpy (bufp, buf + 1); + + free (buf); + + return bufp; +} + + +/* Convert a hexidecimal string into a binary string. This is used in the + fallback conversion of a hexidecimal string to a REAL. */ + +static char * +hex2bin(int nbits, char *hex) +{ + const char bits[16][5] = { + "0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111", + "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111"}; + + char *buf, *bufp; + int i, j, n; + + bufp = buf = XCNEWVEC (char, nbits + 1); + memset (bufp, 0, nbits + 1); + + n = strlen (hex); + for (i = 0; i < n; i++, hex++) + { + j = *hex; + if (j > 47 && j < 58) + j -= 48; + else if (j > 64 && j < 71) + j -= 55; + else if (j > 96 && j < 103) + j -= 87; + else + gcc_unreachable (); + + strcpy (bufp, &bits[j][0]); + bufp += 4; + } + + return buf; +} + + +/* Fallback conversion of a BOZ string to REAL. */ + +static void +bin2real (gfc_expr *x, int kind) +{ + char buf[114], *sp; + int b, i, ie, t, w; + bool sgn; + mpz_t em; + + i = gfc_validate_kind (BT_REAL, kind, false); + t = gfc_real_kinds[i].digits - 1; + + /* Number of bits in the exponent. */ + if (gfc_real_kinds[i].max_exponent == 16384) + w = 15; + else if (gfc_real_kinds[i].max_exponent == 1024) + w = 11; + else + w = 8; + + if (x->boz.rdx == 16) + sp = hex2bin (gfc_real_kinds[i].mode_precision, x->boz.str); + else if (x->boz.rdx == 8) + sp = oct2bin (gfc_real_kinds[i].mode_precision, x->boz.str); + else + sp = x->boz.str; + + /* Extract sign bit. */ + sgn = *sp != '0'; + + /* Extract biased exponent. */ + memset (buf, 0, 114); + strncpy (buf, ++sp, w); + mpz_init (em); + mpz_set_str (em, buf, 2); + ie = mpz_get_si (em); + + mpfr_init2 (x->value.real, t + 1); + x->ts.type = BT_REAL; + x->ts.kind = kind; + + sp += w; /* Set to first digit in significand. */ + b = (1 << w) - 1; + if ((i == 0 && ie == b) || (i == 1 && ie == b) + || ((i == 2 || i == 3) && ie == b)) + { + bool zeros = true; + if (i == 2) sp++; + for (; *sp; sp++) + { + if (*sp != '0') + { + zeros = false; + break; + } + } + + if (zeros) + mpfr_set_inf (x->value.real, 1); + else + mpfr_set_nan (x->value.real); + } + else + { + if (i == 2) + strncpy (buf, sp, t + 1); + else + { + /* Significand with hidden bit. */ + buf[0] = '1'; + strncpy (&buf[1], sp, t); + } + + /* Convert to significand to integer. */ + mpz_set_str (em, buf, 2); + ie -= ((1 << (w - 1)) - 1); /* Unbiased exponent. */ + mpfr_set_z_2exp (x->value.real, em, ie - t, GFC_RND_MODE); + } + + if (sgn) mpfr_neg (x->value.real, x->value.real, GFC_RND_MODE); + + mpz_clear (em); +} + + +/* Fortran 2018 treats a BOZ as simply a string of bits. gfc_boz2real () + converts the string into a REAL of the appropriate kind. The treatment + of the sign bit is processor dependent. */ + +bool +gfc_boz2real (gfc_expr *x, int kind) +{ + extern int gfc_max_integer_kind; + gfc_typespec ts; + int len; + char *buf, *str; + + if (!is_boz_constant (x)) + return false; + + /* Determine the length of the required string. */ + len = 8 * kind; + if (x->boz.rdx == 16) len /= 4; + if (x->boz.rdx == 8) len = len / 3 + 1; + buf = (char *) alloca (len + 1); /* +1 for NULL terminator. */ + + if (x->boz.len >= len) /* Truncate if necessary. */ + { + str = x->boz.str + (x->boz.len - len); + strcpy(buf, str); + } + else /* Copy and pad. */ + { + memset (buf, 48, len); + str = buf + (len - x->boz.len); + strcpy (str, x->boz.str); + } + + /* Need to adjust leading bits in an octal string. */ + if (x->boz.rdx == 8) + { + /* Clear first bit. */ + if (kind == 4 || kind == 10 || kind == 16) + { + if (buf[0] == '4') + buf[0] = '0'; + else if (buf[0] == '5') + buf[0] = '1'; + else if (buf[0] == '6') + buf[0] = '2'; + else if (buf[0] == '7') + buf[0] = '3'; + } + /* Clear first two bits. */ + else + { + if (buf[0] == '2' || buf[0] == '4' || buf[0] == '6') + buf[0] = '0'; + else if (buf[0] == '3' || buf[0] == '5' || buf[0] == '7') + buf[0] = '1'; + } + } + + /* Reset BOZ string to the truncated or padded version. */ + free (x->boz.str); + x->boz.len = len; + x->boz.str = XCNEWVEC (char, len + 1); + strncpy (x->boz.str, buf, len); + + /* For some targets, the largest INTEGER in terms of bits is smaller than + the bits needed to hold the REAL. Fortunately, the kind type parameter + indicates the number of bytes required to an INTEGER and a REAL. */ + if (gfc_max_integer_kind < kind) + { + bin2real (x, kind); + } + else + { + /* Convert to widest possible integer. */ + gfc_boz2int (x, gfc_max_integer_kind); + ts.type = BT_REAL; + ts.kind = kind; + if (!gfc_convert_boz (x, &ts)) + { + gfc_error ("Failure in conversion of BOZ to REAL at %L", &x->where); + return false; + } + } + + return true; +} + + +/* Fortran 2018 treats a BOZ as simply a string of bits. gfc_boz2int () + converts the string into an INTEGER of the appropriate kind. The + treatment of the sign bit is processor dependent. If the converted + value exceeds the range of the type, then wrap-around semantics are + applied. */ + +bool +gfc_boz2int (gfc_expr *x, int kind) +{ + int i, len; + char *buf, *str; + mpz_t tmp1; + + if (!is_boz_constant (x)) + return false; + + i = gfc_validate_kind (BT_INTEGER, kind, false); + len = gfc_integer_kinds[i].bit_size; + if (x->boz.rdx == 16) len /= 4; + if (x->boz.rdx == 8) len = len / 3 + 1; + buf = (char *) alloca (len + 1); /* +1 for NULL terminator. */ + + if (x->boz.len >= len) /* Truncate if necessary. */ + { + str = x->boz.str + (x->boz.len - len); + strcpy(buf, str); + } + else /* Copy and pad. */ + { + memset (buf, 48, len); + str = buf + (len - x->boz.len); + strcpy (str, x->boz.str); + } + + /* Need to adjust leading bits in an octal string. */ + if (x->boz.rdx == 8) + { + /* Clear first bit. */ + if (kind == 1 || kind == 4 || kind == 16) + { + if (buf[0] == '4') + buf[0] = '0'; + else if (buf[0] == '5') + buf[0] = '1'; + else if (buf[0] == '6') + buf[0] = '2'; + else if (buf[0] == '7') + buf[0] = '3'; + } + /* Clear first two bits. */ + else + { + if (buf[0] == '2' || buf[0] == '4' || buf[0] == '6') + buf[0] = '0'; + else if (buf[0] == '3' || buf[0] == '5' || buf[0] == '7') + buf[0] = '1'; + } + } + + /* Convert as-if unsigned integer. */ + mpz_init (tmp1); + mpz_set_str (tmp1, buf, x->boz.rdx); + + /* Check for wrap-around. */ + if (mpz_cmp (tmp1, gfc_integer_kinds[i].huge) > 0) + { + mpz_t tmp2; + mpz_init (tmp2); + mpz_add_ui (tmp2, gfc_integer_kinds[i].huge, 1); + mpz_mod (tmp1, tmp1, tmp2); + mpz_sub (tmp1, tmp1, tmp2); + mpz_clear (tmp2); + } + + /* Clear boz info. */ + x->boz.rdx = 0; + x->boz.len = 0; + free (x->boz.str); + + mpz_init (x->value.integer); + mpz_set (x->value.integer, tmp1); + x->ts.type = BT_INTEGER; + x->ts.kind = kind; + mpz_clear (tmp1); + + return true; +} + + +/* Make sure an expression is a scalar. */ + +static bool +scalar_check (gfc_expr *e, int n) +{ + if (e->rank == 0) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be a scalar", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where); + + return false; +} + + +/* Check the type of an expression. */ + +static bool +type_check (gfc_expr *e, int n, bt type) +{ + if (e->ts.type == type) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be %s", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where, gfc_basic_typename (type)); + + return false; +} + + +/* Check that the expression is a numeric type. */ + +static bool +numeric_check (gfc_expr *e, int n) +{ + /* Users sometime use a subroutine designator as an actual argument to + an intrinsic subprogram that expects an argument with a numeric type. */ + if (e->symtree && e->symtree->n.sym->attr.subroutine) + goto error; + + if (gfc_numeric_ts (&e->ts)) + return true; + + /* If the expression has not got a type, check if its namespace can + offer a default type. */ + if ((e->expr_type == EXPR_VARIABLE || e->expr_type == EXPR_FUNCTION) + && e->symtree->n.sym->ts.type == BT_UNKNOWN + && gfc_set_default_type (e->symtree->n.sym, 0, e->symtree->n.sym->ns) + && gfc_numeric_ts (&e->symtree->n.sym->ts)) + { + e->ts = e->symtree->n.sym->ts; + return true; + } + +error: + + gfc_error ("%qs argument of %qs intrinsic at %L must have a numeric type", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where); + + return false; +} + + +/* Check that an expression is integer or real. */ + +static bool +int_or_real_check (gfc_expr *e, int n) +{ + if (e->ts.type != BT_INTEGER && e->ts.type != BT_REAL) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER " + "or REAL", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + return false; + } + + return true; +} + +/* Check that an expression is integer or real; allow character for + F2003 or later. */ + +static bool +int_or_real_or_char_check_f2003 (gfc_expr *e, int n) +{ + if (e->ts.type != BT_INTEGER && e->ts.type != BT_REAL) + { + if (e->ts.type == BT_CHARACTER) + return gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Character for " + "%qs argument of %qs intrinsic at %L", + gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + else + { + if (gfc_option.allow_std & GFC_STD_F2003) + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER " + "or REAL or CHARACTER", + gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + else + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER " + "or REAL", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + } + return false; + } + + return true; +} + +/* Check that an expression is an intrinsic type. */ +static bool +intrinsic_type_check (gfc_expr *e, int n) +{ + if (e->ts.type != BT_INTEGER && e->ts.type != BT_REAL + && e->ts.type != BT_COMPLEX && e->ts.type != BT_CHARACTER + && e->ts.type != BT_LOGICAL) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be of intrinsic type", + gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + return false; + } + return true; +} + +/* Check that an expression is real or complex. */ + +static bool +real_or_complex_check (gfc_expr *e, int n) +{ + if (e->ts.type != BT_REAL && e->ts.type != BT_COMPLEX) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be REAL " + "or COMPLEX", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + return false; + } + + return true; +} + + +/* Check that an expression is INTEGER or PROCEDURE. */ + +static bool +int_or_proc_check (gfc_expr *e, int n) +{ + if (e->ts.type != BT_INTEGER && e->ts.type != BT_PROCEDURE) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER " + "or PROCEDURE", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + return false; + } + + return true; +} + + +/* Check that the expression is an optional constant integer + and that it specifies a valid kind for that type. */ + +static bool +kind_check (gfc_expr *k, int n, bt type) +{ + int kind; + + if (k == NULL) + return true; + + if (!type_check (k, n, BT_INTEGER)) + return false; + + if (!scalar_check (k, n)) + return false; + + if (!gfc_check_init_expr (k)) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a constant", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &k->where); + return false; + } + + if (gfc_extract_int (k, &kind) + || gfc_validate_kind (type, kind, true) < 0) + { + gfc_error ("Invalid kind for %s at %L", gfc_basic_typename (type), + &k->where); + return false; + } + + return true; +} + + +/* Make sure the expression is a double precision real. */ + +static bool +double_check (gfc_expr *d, int n) +{ + if (!type_check (d, n, BT_REAL)) + return false; + + if (d->ts.kind != gfc_default_double_kind) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be double " + "precision", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &d->where); + return false; + } + + return true; +} + + +static bool +coarray_check (gfc_expr *e, int n) +{ + if (e->ts.type == BT_CLASS && gfc_expr_attr (e).class_ok + && CLASS_DATA (e)->attr.codimension + && CLASS_DATA (e)->as->corank) + { + gfc_add_class_array_ref (e); + return true; + } + + if (!gfc_is_coarray (e)) + { + gfc_error ("Expected coarray variable as %qs argument to the %s " + "intrinsic at %L", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + return false; + } + + return true; +} + + +/* Make sure the expression is a logical array. */ + +static bool +logical_array_check (gfc_expr *array, int n) +{ + if (array->ts.type != BT_LOGICAL || array->rank == 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a logical " + "array", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &array->where); + return false; + } + + return true; +} + + +/* Make sure an expression is an array. */ + +static bool +array_check (gfc_expr *e, int n) +{ + if (e->rank != 0 && e->ts.type == BT_CLASS && gfc_expr_attr (e).class_ok + && CLASS_DATA (e)->attr.dimension + && CLASS_DATA (e)->as->rank) + { + gfc_add_class_array_ref (e); + } + + if (e->rank != 0 && e->ts.type != BT_PROCEDURE) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be an array", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where); + + return false; +} + + +/* If expr is a constant, then check to ensure that it is greater than + of equal to zero. */ + +static bool +nonnegative_check (const char *arg, gfc_expr *expr) +{ + int i; + + if (expr->expr_type == EXPR_CONSTANT) + { + gfc_extract_int (expr, &i); + if (i < 0) + { + gfc_error ("%qs at %L must be nonnegative", arg, &expr->where); + return false; + } + } + + return true; +} + + +/* If expr is a constant, then check to ensure that it is greater than zero. */ + +static bool +positive_check (int n, gfc_expr *expr) +{ + int i; + + if (expr->expr_type == EXPR_CONSTANT) + { + gfc_extract_int (expr, &i); + if (i <= 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be positive", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &expr->where); + return false; + } + } + + return true; +} + + +/* If expr2 is constant, then check that the value is less than + (less than or equal to, if 'or_equal' is true) bit_size(expr1). */ + +static bool +less_than_bitsize1 (const char *arg1, gfc_expr *expr1, const char *arg2, + gfc_expr *expr2, bool or_equal) +{ + int i2, i3; + + if (expr2->expr_type == EXPR_CONSTANT) + { + gfc_extract_int (expr2, &i2); + i3 = gfc_validate_kind (BT_INTEGER, expr1->ts.kind, false); + + /* For ISHFT[C], check that |shift| <= bit_size(i). */ + if (arg2 == NULL) + { + if (i2 < 0) + i2 = -i2; + + if (i2 > gfc_integer_kinds[i3].bit_size) + { + gfc_error ("The absolute value of SHIFT at %L must be less " + "than or equal to BIT_SIZE(%qs)", + &expr2->where, arg1); + return false; + } + } + + if (or_equal) + { + if (i2 > gfc_integer_kinds[i3].bit_size) + { + gfc_error ("%qs at %L must be less than " + "or equal to BIT_SIZE(%qs)", + arg2, &expr2->where, arg1); + return false; + } + } + else + { + if (i2 >= gfc_integer_kinds[i3].bit_size) + { + gfc_error ("%qs at %L must be less than BIT_SIZE(%qs)", + arg2, &expr2->where, arg1); + return false; + } + } + } + + return true; +} + + +/* If expr is constant, then check that the value is less than or equal + to the bit_size of the kind k. */ + +static bool +less_than_bitsizekind (const char *arg, gfc_expr *expr, int k) +{ + int i, val; + + if (expr->expr_type != EXPR_CONSTANT) + return true; + + i = gfc_validate_kind (BT_INTEGER, k, false); + gfc_extract_int (expr, &val); + + if (val > gfc_integer_kinds[i].bit_size) + { + gfc_error ("%qs at %L must be less than or equal to the BIT_SIZE of " + "INTEGER(KIND=%d)", arg, &expr->where, k); + return false; + } + + return true; +} + + +/* If expr2 and expr3 are constants, then check that the value is less than + or equal to bit_size(expr1). */ + +static bool +less_than_bitsize2 (const char *arg1, gfc_expr *expr1, const char *arg2, + gfc_expr *expr2, const char *arg3, gfc_expr *expr3) +{ + int i2, i3; + + if (expr2->expr_type == EXPR_CONSTANT && expr3->expr_type == EXPR_CONSTANT) + { + gfc_extract_int (expr2, &i2); + gfc_extract_int (expr3, &i3); + i2 += i3; + i3 = gfc_validate_kind (BT_INTEGER, expr1->ts.kind, false); + if (i2 > gfc_integer_kinds[i3].bit_size) + { + gfc_error ("%<%s + %s%> at %L must be less than or equal " + "to BIT_SIZE(%qs)", + arg2, arg3, &expr2->where, arg1); + return false; + } + } + + return true; +} + +/* Make sure two expressions have the same type. */ + +static bool +same_type_check (gfc_expr *e, int n, gfc_expr *f, int m, bool assoc = false) +{ + gfc_typespec *ets = &e->ts; + gfc_typespec *fts = &f->ts; + + if (assoc) + { + /* Procedure pointer component expressions have the type of the interface + procedure. If they are being tested for association with a procedure + pointer (ie. not a component), the type of the procedure must be + determined. */ + if (e->ts.type == BT_PROCEDURE && e->symtree->n.sym) + ets = &e->symtree->n.sym->ts; + if (f->ts.type == BT_PROCEDURE && f->symtree->n.sym) + fts = &f->symtree->n.sym->ts; + } + + if (gfc_compare_types (ets, fts)) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be the same type " + "and kind as %qs", gfc_current_intrinsic_arg[m]->name, + gfc_current_intrinsic, &f->where, + gfc_current_intrinsic_arg[n]->name); + + return false; +} + + +/* Make sure that an expression has a certain (nonzero) rank. */ + +static bool +rank_check (gfc_expr *e, int n, int rank) +{ + if (e->rank == rank) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be of rank %d", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where, rank); + + return false; +} + + +/* Make sure a variable expression is not an optional dummy argument. */ + +static bool +nonoptional_check (gfc_expr *e, int n) +{ + if (e->expr_type == EXPR_VARIABLE && e->symtree->n.sym->attr.optional) + { + gfc_error ("%qs argument of %qs intrinsic at %L must not be OPTIONAL", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where); + } + + /* TODO: Recursive check on nonoptional variables? */ + + return true; +} + + +/* Check for ALLOCATABLE attribute. */ + +static bool +allocatable_check (gfc_expr *e, int n) +{ + symbol_attribute attr; + + attr = gfc_variable_attr (e, NULL); + if (!attr.allocatable + || (attr.associate_var && !attr.select_rank_temporary)) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be ALLOCATABLE", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where); + return false; + } + + return true; +} + + +/* Check that an expression has a particular kind. */ + +static bool +kind_value_check (gfc_expr *e, int n, int k) +{ + if (e->ts.kind == k) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be of kind %d", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, + &e->where, k); + + return false; +} + + +/* Make sure an expression is a variable. */ + +static bool +variable_check (gfc_expr *e, int n, bool allow_proc) +{ + if (e->expr_type == EXPR_VARIABLE + && e->symtree->n.sym->attr.intent == INTENT_IN + && (gfc_current_intrinsic_arg[n]->intent == INTENT_OUT + || gfc_current_intrinsic_arg[n]->intent == INTENT_INOUT) + && !gfc_check_vardef_context (e, false, true, false, NULL)) + { + gfc_error ("%qs argument of %qs intrinsic at %L cannot be INTENT(IN)", + gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &e->where); + return false; + } + + if (e->expr_type == EXPR_VARIABLE + && e->symtree->n.sym->attr.flavor != FL_PARAMETER + && (allow_proc || !e->symtree->n.sym->attr.function)) + return true; + + if (e->expr_type == EXPR_VARIABLE && e->symtree->n.sym->attr.function + && e->symtree->n.sym == e->symtree->n.sym->result) + { + gfc_namespace *ns; + for (ns = gfc_current_ns; ns; ns = ns->parent) + if (ns->proc_name == e->symtree->n.sym) + return true; + } + + /* F2018:R902: function reference having a data pointer result. */ + if (e->expr_type == EXPR_FUNCTION + && e->symtree->n.sym->attr.flavor == FL_PROCEDURE + && e->symtree->n.sym->attr.function + && e->symtree->n.sym->attr.pointer) + return true; + + gfc_error ("%qs argument of %qs intrinsic at %L must be a variable", + gfc_current_intrinsic_arg[n]->name, gfc_current_intrinsic, &e->where); + + return false; +} + + +/* Check the common DIM parameter for correctness. */ + +static bool +dim_check (gfc_expr *dim, int n, bool optional) +{ + if (dim == NULL) + return true; + + if (!type_check (dim, n, BT_INTEGER)) + return false; + + if (!scalar_check (dim, n)) + return false; + + if (!optional && !nonoptional_check (dim, n)) + return false; + + return true; +} + + +/* If a coarray DIM parameter is a constant, make sure that it is greater than + zero and less than or equal to the corank of the given array. */ + +static bool +dim_corank_check (gfc_expr *dim, gfc_expr *array) +{ + int corank; + + gcc_assert (array->expr_type == EXPR_VARIABLE); + + if (dim->expr_type != EXPR_CONSTANT) + return true; + + if (array->ts.type == BT_CLASS) + return true; + + corank = gfc_get_corank (array); + + if (mpz_cmp_ui (dim->value.integer, 1) < 0 + || mpz_cmp_ui (dim->value.integer, corank) > 0) + { + gfc_error ("%<dim%> argument of %qs intrinsic at %L is not a valid " + "codimension index", gfc_current_intrinsic, &dim->where); + + return false; + } + + return true; +} + + +/* If a DIM parameter is a constant, make sure that it is greater than + zero and less than or equal to the rank of the given array. If + allow_assumed is zero then dim must be less than the rank of the array + for assumed size arrays. */ + +static bool +dim_rank_check (gfc_expr *dim, gfc_expr *array, int allow_assumed) +{ + gfc_array_ref *ar; + int rank; + + if (dim == NULL) + return true; + + if (dim->expr_type != EXPR_CONSTANT) + return true; + + if (array->expr_type == EXPR_FUNCTION && array->value.function.isym + && array->value.function.isym->id == GFC_ISYM_SPREAD) + rank = array->rank + 1; + else + rank = array->rank; + + /* Assumed-rank array. */ + if (rank == -1) + rank = GFC_MAX_DIMENSIONS; + + if (array->expr_type == EXPR_VARIABLE) + { + ar = gfc_find_array_ref (array, true); + if (!ar) + return false; + if (ar->as->type == AS_ASSUMED_SIZE + && !allow_assumed + && ar->type != AR_ELEMENT + && ar->type != AR_SECTION) + rank--; + } + + if (mpz_cmp_ui (dim->value.integer, 1) < 0 + || mpz_cmp_ui (dim->value.integer, rank) > 0) + { + gfc_error ("%<dim%> argument of %qs intrinsic at %L is not a valid " + "dimension index", gfc_current_intrinsic, &dim->where); + + return false; + } + + return true; +} + + +/* Compare the size of a along dimension ai with the size of b along + dimension bi, returning 0 if they are known not to be identical, + and 1 if they are identical, or if this cannot be determined. */ + +static int +identical_dimen_shape (gfc_expr *a, int ai, gfc_expr *b, int bi) +{ + mpz_t a_size, b_size; + int ret; + + gcc_assert (a->rank > ai); + gcc_assert (b->rank > bi); + + ret = 1; + + if (gfc_array_dimen_size (a, ai, &a_size)) + { + if (gfc_array_dimen_size (b, bi, &b_size)) + { + if (mpz_cmp (a_size, b_size) != 0) + ret = 0; + + mpz_clear (b_size); + } + mpz_clear (a_size); + } + return ret; +} + +/* Calculate the length of a character variable, including substrings. + Strip away parentheses if necessary. Return -1 if no length could + be determined. */ + +static long +gfc_var_strlen (const gfc_expr *a) +{ + gfc_ref *ra; + + while (a->expr_type == EXPR_OP && a->value.op.op == INTRINSIC_PARENTHESES) + a = a->value.op.op1; + + for (ra = a->ref; ra != NULL && ra->type != REF_SUBSTRING; ra = ra->next) + ; + + if (ra) + { + long start_a, end_a; + + if (!ra->u.ss.end) + return -1; + + if ((!ra->u.ss.start || ra->u.ss.start->expr_type == EXPR_CONSTANT) + && ra->u.ss.end->expr_type == EXPR_CONSTANT) + { + start_a = ra->u.ss.start ? mpz_get_si (ra->u.ss.start->value.integer) + : 1; + end_a = mpz_get_si (ra->u.ss.end->value.integer); + return (end_a < start_a) ? 0 : end_a - start_a + 1; + } + else if (ra->u.ss.start + && gfc_dep_compare_expr (ra->u.ss.start, ra->u.ss.end) == 0) + return 1; + else + return -1; + } + + if (a->ts.u.cl && a->ts.u.cl->length + && a->ts.u.cl->length->expr_type == EXPR_CONSTANT) + return mpz_get_si (a->ts.u.cl->length->value.integer); + else if (a->expr_type == EXPR_CONSTANT + && (a->ts.u.cl == NULL || a->ts.u.cl->length == NULL)) + return a->value.character.length; + else + return -1; + +} + +/* Check whether two character expressions have the same length; + returns true if they have or if the length cannot be determined, + otherwise return false and raise a gfc_error. */ + +bool +gfc_check_same_strlen (const gfc_expr *a, const gfc_expr *b, const char *name) +{ + long len_a, len_b; + + len_a = gfc_var_strlen(a); + len_b = gfc_var_strlen(b); + + if (len_a == -1 || len_b == -1 || len_a == len_b) + return true; + else + { + gfc_error ("Unequal character lengths (%ld/%ld) in %s at %L", + len_a, len_b, name, &a->where); + return false; + } +} + + +/***** Check functions *****/ + +/* Check subroutine suitable for intrinsics taking a real argument and + a kind argument for the result. */ + +static bool +check_a_kind (gfc_expr *a, gfc_expr *kind, bt type) +{ + if (!type_check (a, 0, BT_REAL)) + return false; + if (!kind_check (kind, 1, type)) + return false; + + return true; +} + + +/* Check subroutine suitable for ceiling, floor and nint. */ + +bool +gfc_check_a_ikind (gfc_expr *a, gfc_expr *kind) +{ + return check_a_kind (a, kind, BT_INTEGER); +} + + +/* Check subroutine suitable for aint, anint. */ + +bool +gfc_check_a_xkind (gfc_expr *a, gfc_expr *kind) +{ + return check_a_kind (a, kind, BT_REAL); +} + + +bool +gfc_check_abs (gfc_expr *a) +{ + if (!numeric_check (a, 0)) + return false; + + return true; +} + + +bool +gfc_check_achar (gfc_expr *a, gfc_expr *kind) +{ + if (a->ts.type == BT_BOZ) + { + if (gfc_invalid_boz (G_("BOZ literal constant at %L cannot appear in " + "ACHAR intrinsic subprogram"), &a->where)) + return false; + + if (!gfc_boz2int (a, gfc_default_integer_kind)) + return false; + } + + if (!type_check (a, 0, BT_INTEGER)) + return false; + + if (!kind_check (kind, 1, BT_CHARACTER)) + return false; + + return true; +} + + +bool +gfc_check_access_func (gfc_expr *name, gfc_expr *mode) +{ + if (!type_check (name, 0, BT_CHARACTER) + || !scalar_check (name, 0)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (!type_check (mode, 1, BT_CHARACTER) + || !scalar_check (mode, 1)) + return false; + if (!kind_value_check (mode, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_all_any (gfc_expr *mask, gfc_expr *dim) +{ + if (!logical_array_check (mask, 0)) + return false; + + if (!dim_check (dim, 1, false)) + return false; + + if (!dim_rank_check (dim, mask, 0)) + return false; + + return true; +} + + +/* Limited checking for ALLOCATED intrinsic. Additional checking + is performed in intrinsic.c(sort_actual), because ALLOCATED + has two mutually exclusive non-optional arguments. */ + +bool +gfc_check_allocated (gfc_expr *array) +{ + /* Tests on allocated components of coarrays need to detour the check to + argument of the _caf_get. */ + if (flag_coarray == GFC_FCOARRAY_LIB && array->expr_type == EXPR_FUNCTION + && array->value.function.isym + && array->value.function.isym->id == GFC_ISYM_CAF_GET) + { + array = array->value.function.actual->expr; + if (!array->ref) + return false; + } + + if (!variable_check (array, 0, false)) + return false; + if (!allocatable_check (array, 0)) + return false; + + return true; +} + + +/* Common check function where the first argument must be real or + integer and the second argument must be the same as the first. */ + +bool +gfc_check_a_p (gfc_expr *a, gfc_expr *p) +{ + if (!int_or_real_check (a, 0)) + return false; + + if (a->ts.type != p->ts.type) + { + gfc_error ("%qs and %qs arguments of %qs intrinsic at %L must " + "have the same type", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &p->where); + return false; + } + + if (a->ts.kind != p->ts.kind) + { + if (!gfc_notify_std (GFC_STD_GNU, "Different type kinds at %L", + &p->where)) + return false; + } + + return true; +} + + +bool +gfc_check_x_yd (gfc_expr *x, gfc_expr *y) +{ + if (!double_check (x, 0) || !double_check (y, 1)) + return false; + + return true; +} + +bool +gfc_invalid_null_arg (gfc_expr *x) +{ + if (x->expr_type == EXPR_NULL) + { + gfc_error ("NULL at %L is not permitted as actual argument " + "to %qs intrinsic function", &x->where, + gfc_current_intrinsic); + return true; + } + return false; +} + +bool +gfc_check_associated (gfc_expr *pointer, gfc_expr *target) +{ + symbol_attribute attr1, attr2; + int i; + bool t; + + if (gfc_invalid_null_arg (pointer)) + return false; + + attr1 = gfc_expr_attr (pointer); + + if (!attr1.pointer && !attr1.proc_pointer) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a POINTER", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &pointer->where); + return false; + } + + /* F2008, C1242. */ + if (attr1.pointer && gfc_is_coindexed (pointer)) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be " + "coindexed", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &pointer->where); + return false; + } + + /* Target argument is optional. */ + if (target == NULL) + return true; + + if (gfc_invalid_null_arg (target)) + return false; + + if (target->expr_type == EXPR_VARIABLE || target->expr_type == EXPR_FUNCTION) + attr2 = gfc_expr_attr (target); + else + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a pointer " + "or target VARIABLE or FUNCTION", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &target->where); + return false; + } + + if (attr1.pointer && !attr2.pointer && !attr2.target) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a POINTER " + "or a TARGET", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &target->where); + return false; + } + + /* F2008, C1242. */ + if (attr1.pointer && gfc_is_coindexed (target)) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be " + "coindexed", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &target->where); + return false; + } + + t = true; + if (!same_type_check (pointer, 0, target, 1, true)) + t = false; + /* F2018 C838 explicitly allows an assumed-rank variable as the first + argument of intrinsic inquiry functions. */ + if (pointer->rank != -1 && !rank_check (target, 0, pointer->rank)) + t = false; + if (target->rank > 0) + { + for (i = 0; i < target->rank; i++) + if (target->ref->u.ar.dimen_type[i] == DIMEN_VECTOR) + { + gfc_error ("Array section with a vector subscript at %L shall not " + "be the target of a pointer", + &target->where); + t = false; + break; + } + } + return t; +} + + +bool +gfc_check_atan_2 (gfc_expr *y, gfc_expr *x) +{ + /* gfc_notify_std would be a waste of time as the return value + is seemingly used only for the generic resolution. The error + will be: Too many arguments. */ + if ((gfc_option.allow_std & GFC_STD_F2008) == 0) + return false; + + return gfc_check_atan2 (y, x); +} + + +bool +gfc_check_atan2 (gfc_expr *y, gfc_expr *x) +{ + if (!type_check (y, 0, BT_REAL)) + return false; + if (!same_type_check (y, 0, x, 1)) + return false; + + return true; +} + + +static bool +gfc_check_atomic (gfc_expr *atom, int atom_no, gfc_expr *value, int val_no, + gfc_expr *stat, int stat_no) +{ + if (!scalar_check (atom, atom_no) || !scalar_check (value, val_no)) + return false; + + if (!(atom->ts.type == BT_INTEGER && atom->ts.kind == gfc_atomic_int_kind) + && !(atom->ts.type == BT_LOGICAL + && atom->ts.kind == gfc_atomic_logical_kind)) + { + gfc_error ("ATOM argument at %L to intrinsic function %s shall be an " + "integer of ATOMIC_INT_KIND or a logical of " + "ATOMIC_LOGICAL_KIND", &atom->where, gfc_current_intrinsic); + return false; + } + + if (!gfc_is_coarray (atom) && !gfc_is_coindexed (atom)) + { + gfc_error ("ATOM argument at %L of the %s intrinsic function shall be a " + "coarray or coindexed", &atom->where, gfc_current_intrinsic); + return false; + } + + if (atom->ts.type != value->ts.type) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall have the same " + "type as %qs at %L", gfc_current_intrinsic_arg[val_no]->name, + gfc_current_intrinsic, &value->where, + gfc_current_intrinsic_arg[atom_no]->name, &atom->where); + return false; + } + + if (stat != NULL) + { + if (!type_check (stat, stat_no, BT_INTEGER)) + return false; + if (!scalar_check (stat, stat_no)) + return false; + if (!variable_check (stat, stat_no, false)) + return false; + if (!kind_value_check (stat, stat_no, gfc_default_integer_kind)) + return false; + + if (!gfc_notify_std (GFC_STD_F2018, "STAT= argument to %s at %L", + gfc_current_intrinsic, &stat->where)) + return false; + } + + return true; +} + + +bool +gfc_check_atomic_def (gfc_expr *atom, gfc_expr *value, gfc_expr *stat) +{ + if (atom->expr_type == EXPR_FUNCTION + && atom->value.function.isym + && atom->value.function.isym->id == GFC_ISYM_CAF_GET) + atom = atom->value.function.actual->expr; + + if (!gfc_check_vardef_context (atom, false, false, false, NULL)) + { + gfc_error ("ATOM argument of the %s intrinsic function at %L shall be " + "definable", gfc_current_intrinsic, &atom->where); + return false; + } + + return gfc_check_atomic (atom, 0, value, 1, stat, 2); +} + + +bool +gfc_check_atomic_op (gfc_expr *atom, gfc_expr *value, gfc_expr *stat) +{ + if (atom->ts.type != BT_INTEGER || atom->ts.kind != gfc_atomic_int_kind) + { + gfc_error ("ATOM argument at %L to intrinsic function %s shall be an " + "integer of ATOMIC_INT_KIND", &atom->where, + gfc_current_intrinsic); + return false; + } + + return gfc_check_atomic_def (atom, value, stat); +} + + +bool +gfc_check_atomic_ref (gfc_expr *value, gfc_expr *atom, gfc_expr *stat) +{ + if (atom->expr_type == EXPR_FUNCTION + && atom->value.function.isym + && atom->value.function.isym->id == GFC_ISYM_CAF_GET) + atom = atom->value.function.actual->expr; + + if (!gfc_check_vardef_context (value, false, false, false, NULL)) + { + gfc_error ("VALUE argument of the %s intrinsic function at %L shall be " + "definable", gfc_current_intrinsic, &value->where); + return false; + } + + return gfc_check_atomic (atom, 1, value, 0, stat, 2); +} + + +bool +gfc_check_image_status (gfc_expr *image, gfc_expr *team) +{ + /* IMAGE has to be a positive, scalar integer. */ + if (!type_check (image, 0, BT_INTEGER) || !scalar_check (image, 0) + || !positive_check (0, image)) + return false; + + if (team) + { + gfc_error ("%qs argument of %qs intrinsic at %L not yet supported", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &team->where); + return false; + } + return true; +} + + +bool +gfc_check_failed_or_stopped_images (gfc_expr *team, gfc_expr *kind) +{ + if (team) + { + gfc_error ("%qs argument of %qs intrinsic at %L not yet supported", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &team->where); + return false; + } + + if (kind) + { + int k; + + if (!type_check (kind, 1, BT_INTEGER) || !scalar_check (kind, 1) + || !positive_check (1, kind)) + return false; + + /* Get the kind, reporting error on non-constant or overflow. */ + gfc_current_locus = kind->where; + if (gfc_extract_int (kind, &k, 1)) + return false; + if (gfc_validate_kind (BT_INTEGER, k, true) == -1) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall specify a " + "valid integer kind", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &kind->where); + return false; + } + } + return true; +} + + +bool +gfc_check_get_team (gfc_expr *level) +{ + if (level) + { + gfc_error ("%qs argument of %qs intrinsic at %L not yet supported", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &level->where); + return false; + } + return true; +} + + +bool +gfc_check_atomic_cas (gfc_expr *atom, gfc_expr *old, gfc_expr *compare, + gfc_expr *new_val, gfc_expr *stat) +{ + if (atom->expr_type == EXPR_FUNCTION + && atom->value.function.isym + && atom->value.function.isym->id == GFC_ISYM_CAF_GET) + atom = atom->value.function.actual->expr; + + if (!gfc_check_atomic (atom, 0, new_val, 3, stat, 4)) + return false; + + if (!scalar_check (old, 1) || !scalar_check (compare, 2)) + return false; + + if (!same_type_check (atom, 0, old, 1)) + return false; + + if (!same_type_check (atom, 0, compare, 2)) + return false; + + if (!gfc_check_vardef_context (atom, false, false, false, NULL)) + { + gfc_error ("ATOM argument of the %s intrinsic function at %L shall be " + "definable", gfc_current_intrinsic, &atom->where); + return false; + } + + if (!gfc_check_vardef_context (old, false, false, false, NULL)) + { + gfc_error ("OLD argument of the %s intrinsic function at %L shall be " + "definable", gfc_current_intrinsic, &old->where); + return false; + } + + return true; +} + +bool +gfc_check_event_query (gfc_expr *event, gfc_expr *count, gfc_expr *stat) +{ + if (event->ts.type != BT_DERIVED + || event->ts.u.derived->from_intmod != INTMOD_ISO_FORTRAN_ENV + || event->ts.u.derived->intmod_sym_id != ISOFORTRAN_EVENT_TYPE) + { + gfc_error ("EVENT argument at %L to the intrinsic EVENT_QUERY " + "shall be of type EVENT_TYPE", &event->where); + return false; + } + + if (!scalar_check (event, 0)) + return false; + + if (!gfc_check_vardef_context (count, false, false, false, NULL)) + { + gfc_error ("COUNT argument of the EVENT_QUERY intrinsic function at %L " + "shall be definable", &count->where); + return false; + } + + if (!type_check (count, 1, BT_INTEGER)) + return false; + + int i = gfc_validate_kind (BT_INTEGER, count->ts.kind, false); + int j = gfc_validate_kind (BT_INTEGER, gfc_default_integer_kind, false); + + if (gfc_integer_kinds[i].range < gfc_integer_kinds[j].range) + { + gfc_error ("COUNT argument of the EVENT_QUERY intrinsic function at %L " + "shall have at least the range of the default integer", + &count->where); + return false; + } + + if (stat != NULL) + { + if (!type_check (stat, 2, BT_INTEGER)) + return false; + if (!scalar_check (stat, 2)) + return false; + if (!variable_check (stat, 2, false)) + return false; + + if (!gfc_notify_std (GFC_STD_F2018, "STAT= argument to %s at %L", + gfc_current_intrinsic, &stat->where)) + return false; + } + + return true; +} + + +bool +gfc_check_atomic_fetch_op (gfc_expr *atom, gfc_expr *value, gfc_expr *old, + gfc_expr *stat) +{ + if (atom->expr_type == EXPR_FUNCTION + && atom->value.function.isym + && atom->value.function.isym->id == GFC_ISYM_CAF_GET) + atom = atom->value.function.actual->expr; + + if (atom->ts.type != BT_INTEGER || atom->ts.kind != gfc_atomic_int_kind) + { + gfc_error ("ATOM argument at %L to intrinsic function %s shall be an " + "integer of ATOMIC_INT_KIND", &atom->where, + gfc_current_intrinsic); + return false; + } + + if (!gfc_check_atomic (atom, 0, value, 1, stat, 3)) + return false; + + if (!scalar_check (old, 2)) + return false; + + if (!same_type_check (atom, 0, old, 2)) + return false; + + if (!gfc_check_vardef_context (atom, false, false, false, NULL)) + { + gfc_error ("ATOM argument of the %s intrinsic function at %L shall be " + "definable", gfc_current_intrinsic, &atom->where); + return false; + } + + if (!gfc_check_vardef_context (old, false, false, false, NULL)) + { + gfc_error ("OLD argument of the %s intrinsic function at %L shall be " + "definable", gfc_current_intrinsic, &old->where); + return false; + } + + return true; +} + + +/* BESJN and BESYN functions. */ + +bool +gfc_check_besn (gfc_expr *n, gfc_expr *x) +{ + if (!type_check (n, 0, BT_INTEGER)) + return false; + if (n->expr_type == EXPR_CONSTANT) + { + int i; + gfc_extract_int (n, &i); + if (i < 0 && !gfc_notify_std (GFC_STD_GNU, "Negative argument " + "N at %L", &n->where)) + return false; + } + + if (!type_check (x, 1, BT_REAL)) + return false; + + return true; +} + + +/* Transformational version of the Bessel JN and YN functions. */ + +bool +gfc_check_bessel_n2 (gfc_expr *n1, gfc_expr *n2, gfc_expr *x) +{ + if (!type_check (n1, 0, BT_INTEGER)) + return false; + if (!scalar_check (n1, 0)) + return false; + if (!nonnegative_check ("N1", n1)) + return false; + + if (!type_check (n2, 1, BT_INTEGER)) + return false; + if (!scalar_check (n2, 1)) + return false; + if (!nonnegative_check ("N2", n2)) + return false; + + if (!type_check (x, 2, BT_REAL)) + return false; + if (!scalar_check (x, 2)) + return false; + + return true; +} + + +bool +gfc_check_bge_bgt_ble_blt (gfc_expr *i, gfc_expr *j) +{ + extern int gfc_max_integer_kind; + + /* If i and j are both BOZ, convert to widest INTEGER. */ + if (i->ts.type == BT_BOZ && j->ts.type == BT_BOZ) + { + if (!gfc_boz2int (i, gfc_max_integer_kind)) + return false; + if (!gfc_boz2int (j, gfc_max_integer_kind)) + return false; + } + + /* If i is BOZ and j is integer, convert i to type of j. */ + if (i->ts.type == BT_BOZ && j->ts.type == BT_INTEGER + && !gfc_boz2int (i, j->ts.kind)) + return false; + + /* If j is BOZ and i is integer, convert j to type of i. */ + if (j->ts.type == BT_BOZ && i->ts.type == BT_INTEGER + && !gfc_boz2int (j, i->ts.kind)) + return false; + + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!type_check (j, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_bitfcn (gfc_expr *i, gfc_expr *pos) +{ + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!type_check (pos, 1, BT_INTEGER)) + return false; + + if (!nonnegative_check ("pos", pos)) + return false; + + if (!less_than_bitsize1 ("i", i, "pos", pos, false)) + return false; + + return true; +} + + +bool +gfc_check_char (gfc_expr *i, gfc_expr *kind) +{ + if (i->ts.type == BT_BOZ) + { + if (gfc_invalid_boz (G_("BOZ literal constant at %L cannot appear in " + "CHAR intrinsic subprogram"), &i->where)) + return false; + + if (!gfc_boz2int (i, gfc_default_integer_kind)) + return false; + } + + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!kind_check (kind, 1, BT_CHARACTER)) + return false; + + return true; +} + + +bool +gfc_check_chdir (gfc_expr *dir) +{ + if (!type_check (dir, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (dir, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_chdir_sub (gfc_expr *dir, gfc_expr *status) +{ + if (!type_check (dir, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (dir, 0, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 1, BT_INTEGER)) + return false; + if (!scalar_check (status, 1)) + return false; + + return true; +} + + +bool +gfc_check_chmod (gfc_expr *name, gfc_expr *mode) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (!type_check (mode, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (mode, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_chmod_sub (gfc_expr *name, gfc_expr *mode, gfc_expr *status) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (!type_check (mode, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (mode, 1, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER)) + return false; + + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_cmplx (gfc_expr *x, gfc_expr *y, gfc_expr *kind) +{ + int k; + + /* Check kind first, because it may be needed in conversion of a BOZ. */ + if (kind) + { + if (!kind_check (kind, 2, BT_COMPLEX)) + return false; + gfc_extract_int (kind, &k); + } + else + k = gfc_default_complex_kind; + + if (x->ts.type == BT_BOZ && !gfc_boz2real (x, k)) + return false; + + if (!numeric_check (x, 0)) + return false; + + if (y != NULL) + { + if (y->ts.type == BT_BOZ && !gfc_boz2real (y, k)) + return false; + + if (!numeric_check (y, 1)) + return false; + + if (x->ts.type == BT_COMPLEX) + { + gfc_error ("%qs argument of %qs intrinsic at %L must not be " + "present if %<x%> is COMPLEX", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &y->where); + return false; + } + + if (y->ts.type == BT_COMPLEX) + { + gfc_error ("%qs argument of %qs intrinsic at %L must have a type " + "of either REAL or INTEGER", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &y->where); + return false; + } + } + + if (!kind && warn_conversion + && x->ts.type == BT_REAL && x->ts.kind > gfc_default_real_kind) + gfc_warning_now (OPT_Wconversion, "Conversion from %s to default-kind " + "COMPLEX(%d) at %L might lose precision, consider using " + "the KIND argument", gfc_typename (&x->ts), + gfc_default_real_kind, &x->where); + else if (y && !kind && warn_conversion + && y->ts.type == BT_REAL && y->ts.kind > gfc_default_real_kind) + gfc_warning_now (OPT_Wconversion, "Conversion from %s to default-kind " + "COMPLEX(%d) at %L might lose precision, consider using " + "the KIND argument", gfc_typename (&y->ts), + gfc_default_real_kind, &y->where); + return true; +} + + +static bool +check_co_collective (gfc_expr *a, gfc_expr *image_idx, gfc_expr *stat, + gfc_expr *errmsg, bool co_reduce) +{ + if (!variable_check (a, 0, false)) + return false; + + if (!gfc_check_vardef_context (a, false, false, false, "argument 'A' with " + "INTENT(INOUT)")) + return false; + + /* Fortran 2008, 12.5.2.4, paragraph 18. */ + if (gfc_has_vector_subscript (a)) + { + gfc_error ("Argument %<A%> with INTENT(INOUT) at %L of the intrinsic " + "subroutine %s shall not have a vector subscript", + &a->where, gfc_current_intrinsic); + return false; + } + + if (gfc_is_coindexed (a)) + { + gfc_error ("The A argument at %L to the intrinsic %s shall not be " + "coindexed", &a->where, gfc_current_intrinsic); + return false; + } + + if (image_idx != NULL) + { + if (!type_check (image_idx, co_reduce ? 2 : 1, BT_INTEGER)) + return false; + if (!scalar_check (image_idx, co_reduce ? 2 : 1)) + return false; + } + + if (stat != NULL) + { + if (!type_check (stat, co_reduce ? 3 : 2, BT_INTEGER)) + return false; + if (!scalar_check (stat, co_reduce ? 3 : 2)) + return false; + if (!variable_check (stat, co_reduce ? 3 : 2, false)) + return false; + if (stat->ts.kind != 4) + { + gfc_error ("The stat= argument at %L must be a kind=4 integer " + "variable", &stat->where); + return false; + } + } + + if (errmsg != NULL) + { + if (!type_check (errmsg, co_reduce ? 4 : 3, BT_CHARACTER)) + return false; + if (!scalar_check (errmsg, co_reduce ? 4 : 3)) + return false; + if (!variable_check (errmsg, co_reduce ? 4 : 3, false)) + return false; + if (errmsg->ts.kind != 1) + { + gfc_error ("The errmsg= argument at %L must be a default-kind " + "character variable", &errmsg->where); + return false; + } + } + + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %L, use %<-fcoarray=%> to enable", + &a->where); + return false; + } + + return true; +} + + +bool +gfc_check_co_broadcast (gfc_expr *a, gfc_expr *source_image, gfc_expr *stat, + gfc_expr *errmsg) +{ + if (a->ts.type == BT_CLASS || gfc_expr_attr (a).alloc_comp) + { + gfc_error ("Support for the A argument at %L which is polymorphic A " + "argument or has allocatable components is not yet " + "implemented", &a->where); + return false; + } + return check_co_collective (a, source_image, stat, errmsg, false); +} + + +bool +gfc_check_co_reduce (gfc_expr *a, gfc_expr *op, gfc_expr *result_image, + gfc_expr *stat, gfc_expr *errmsg) +{ + symbol_attribute attr; + gfc_formal_arglist *formal; + gfc_symbol *sym; + + if (a->ts.type == BT_CLASS) + { + gfc_error ("The A argument at %L of CO_REDUCE shall not be polymorphic", + &a->where); + return false; + } + + if (gfc_expr_attr (a).alloc_comp) + { + gfc_error ("Support for the A argument at %L with allocatable components" + " is not yet implemented", &a->where); + return false; + } + + if (!check_co_collective (a, result_image, stat, errmsg, true)) + return false; + + if (!gfc_resolve_expr (op)) + return false; + + attr = gfc_expr_attr (op); + if (!attr.pure || !attr.function) + { + gfc_error ("OPERATION argument at %L must be a PURE function", + &op->where); + return false; + } + + if (attr.intrinsic) + { + /* None of the intrinsics fulfills the criteria of taking two arguments, + returning the same type and kind as the arguments and being permitted + as actual argument. */ + gfc_error ("Intrinsic function %s at %L is not permitted for CO_REDUCE", + op->symtree->n.sym->name, &op->where); + return false; + } + + if (gfc_is_proc_ptr_comp (op)) + { + gfc_component *comp = gfc_get_proc_ptr_comp (op); + sym = comp->ts.interface; + } + else + sym = op->symtree->n.sym; + + formal = sym->formal; + + if (!formal || !formal->next || formal->next->next) + { + gfc_error ("The function passed as OPERATION at %L shall have two " + "arguments", &op->where); + return false; + } + + if (sym->result->ts.type == BT_UNKNOWN) + gfc_set_default_type (sym->result, 0, NULL); + + if (!gfc_compare_types (&a->ts, &sym->result->ts)) + { + gfc_error ("The A argument at %L has type %s but the function passed as " + "OPERATION at %L returns %s", + &a->where, gfc_typename (a), &op->where, + gfc_typename (&sym->result->ts)); + return false; + } + if (!gfc_compare_types (&a->ts, &formal->sym->ts) + || !gfc_compare_types (&a->ts, &formal->next->sym->ts)) + { + gfc_error ("The function passed as OPERATION at %L has arguments of type " + "%s and %s but shall have type %s", &op->where, + gfc_typename (&formal->sym->ts), + gfc_typename (&formal->next->sym->ts), gfc_typename (a)); + return false; + } + if (op->rank || attr.allocatable || attr.pointer || formal->sym->as + || formal->next->sym->as || formal->sym->attr.allocatable + || formal->next->sym->attr.allocatable || formal->sym->attr.pointer + || formal->next->sym->attr.pointer) + { + gfc_error ("The function passed as OPERATION at %L shall have scalar " + "nonallocatable nonpointer arguments and return a " + "nonallocatable nonpointer scalar", &op->where); + return false; + } + + if (formal->sym->attr.value != formal->next->sym->attr.value) + { + gfc_error ("The function passed as OPERATION at %L shall have the VALUE " + "attribute either for none or both arguments", &op->where); + return false; + } + + if (formal->sym->attr.target != formal->next->sym->attr.target) + { + gfc_error ("The function passed as OPERATION at %L shall have the TARGET " + "attribute either for none or both arguments", &op->where); + return false; + } + + if (formal->sym->attr.asynchronous != formal->next->sym->attr.asynchronous) + { + gfc_error ("The function passed as OPERATION at %L shall have the " + "ASYNCHRONOUS attribute either for none or both arguments", + &op->where); + return false; + } + + if (formal->sym->attr.optional || formal->next->sym->attr.optional) + { + gfc_error ("The function passed as OPERATION at %L shall not have the " + "OPTIONAL attribute for either of the arguments", &op->where); + return false; + } + + if (a->ts.type == BT_CHARACTER) + { + gfc_charlen *cl; + unsigned long actual_size, formal_size1, formal_size2, result_size; + + cl = a->ts.u.cl; + actual_size = cl && cl->length && cl->length->expr_type == EXPR_CONSTANT + ? mpz_get_ui (cl->length->value.integer) : 0; + + cl = formal->sym->ts.u.cl; + formal_size1 = cl && cl->length && cl->length->expr_type == EXPR_CONSTANT + ? mpz_get_ui (cl->length->value.integer) : 0; + + cl = formal->next->sym->ts.u.cl; + formal_size2 = cl && cl->length && cl->length->expr_type == EXPR_CONSTANT + ? mpz_get_ui (cl->length->value.integer) : 0; + + cl = sym->ts.u.cl; + result_size = cl && cl->length && cl->length->expr_type == EXPR_CONSTANT + ? mpz_get_ui (cl->length->value.integer) : 0; + + if (actual_size + && ((formal_size1 && actual_size != formal_size1) + || (formal_size2 && actual_size != formal_size2))) + { + gfc_error ("The character length of the A argument at %L and of the " + "arguments of the OPERATION at %L shall be the same", + &a->where, &op->where); + return false; + } + if (actual_size && result_size && actual_size != result_size) + { + gfc_error ("The character length of the A argument at %L and of the " + "function result of the OPERATION at %L shall be the same", + &a->where, &op->where); + return false; + } + } + + return true; +} + + +bool +gfc_check_co_minmax (gfc_expr *a, gfc_expr *result_image, gfc_expr *stat, + gfc_expr *errmsg) +{ + if (a->ts.type != BT_INTEGER && a->ts.type != BT_REAL + && a->ts.type != BT_CHARACTER) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall be of type " + "integer, real or character", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &a->where); + return false; + } + return check_co_collective (a, result_image, stat, errmsg, false); +} + + +bool +gfc_check_co_sum (gfc_expr *a, gfc_expr *result_image, gfc_expr *stat, + gfc_expr *errmsg) +{ + if (!numeric_check (a, 0)) + return false; + return check_co_collective (a, result_image, stat, errmsg, false); +} + + +bool +gfc_check_complex (gfc_expr *x, gfc_expr *y) +{ + if (!boz_args_check (x, y)) + return false; + + if (x->ts.type == BT_BOZ) + { + if (gfc_invalid_boz (G_("BOZ constant at %L cannot appear in the COMPLEX" + " intrinsic subprogram"), &x->where)) + { + reset_boz (x); + return false; + } + if (y->ts.type == BT_INTEGER && !gfc_boz2int (x, y->ts.kind)) + return false; + if (y->ts.type == BT_REAL && !gfc_boz2real (x, y->ts.kind)) + return false; + } + + if (y->ts.type == BT_BOZ) + { + if (gfc_invalid_boz (G_("BOZ constant at %L cannot appear in the COMPLEX" + " intrinsic subprogram"), &y->where)) + { + reset_boz (y); + return false; + } + if (x->ts.type == BT_INTEGER && !gfc_boz2int (y, x->ts.kind)) + return false; + if (x->ts.type == BT_REAL && !gfc_boz2real (y, x->ts.kind)) + return false; + } + + if (!int_or_real_check (x, 0)) + return false; + if (!scalar_check (x, 0)) + return false; + + if (!int_or_real_check (y, 1)) + return false; + if (!scalar_check (y, 1)) + return false; + + return true; +} + + +bool +gfc_check_count (gfc_expr *mask, gfc_expr *dim, gfc_expr *kind) +{ + if (!logical_array_check (mask, 0)) + return false; + if (!dim_check (dim, 1, false)) + return false; + if (!dim_rank_check (dim, mask, 0)) + return false; + if (!kind_check (kind, 2, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + return true; +} + + +bool +gfc_check_cshift (gfc_expr *array, gfc_expr *shift, gfc_expr *dim) +{ + if (!array_check (array, 0)) + return false; + + if (!type_check (shift, 1, BT_INTEGER)) + return false; + + if (!dim_check (dim, 2, true)) + return false; + + if (!dim_rank_check (dim, array, false)) + return false; + + if (array->rank == 1 || shift->rank == 0) + { + if (!scalar_check (shift, 1)) + return false; + } + else if (shift->rank == array->rank - 1) + { + int d; + if (!dim) + d = 1; + else if (dim->expr_type == EXPR_CONSTANT) + gfc_extract_int (dim, &d); + else + d = -1; + + if (d > 0) + { + int i, j; + for (i = 0, j = 0; i < array->rank; i++) + if (i != d - 1) + { + if (!identical_dimen_shape (array, i, shift, j)) + { + gfc_error ("%qs argument of %qs intrinsic at %L has " + "invalid shape in dimension %d (%ld/%ld)", + gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &shift->where, i + 1, + mpz_get_si (array->shape[i]), + mpz_get_si (shift->shape[j])); + return false; + } + + j += 1; + } + } + } + else + { + gfc_error ("%qs argument of intrinsic %qs at %L of must have rank " + "%d or be a scalar", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &shift->where, array->rank - 1); + return false; + } + + return true; +} + + +bool +gfc_check_ctime (gfc_expr *time) +{ + if (!scalar_check (time, 0)) + return false; + + if (!type_check (time, 0, BT_INTEGER)) + return false; + + return true; +} + + +bool gfc_check_datan2 (gfc_expr *y, gfc_expr *x) +{ + if (!double_check (y, 0) || !double_check (x, 1)) + return false; + + return true; +} + +bool +gfc_check_dcmplx (gfc_expr *x, gfc_expr *y) +{ + if (x->ts.type == BT_BOZ && !gfc_boz2real (x, gfc_default_double_kind)) + return false; + + if (!numeric_check (x, 0)) + return false; + + if (y != NULL) + { + if (y->ts.type == BT_BOZ && !gfc_boz2real (y, gfc_default_double_kind)) + return false; + + if (!numeric_check (y, 1)) + return false; + + if (x->ts.type == BT_COMPLEX) + { + gfc_error ("%qs argument of %qs intrinsic at %L must not be " + "present if %<x%> is COMPLEX", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &y->where); + return false; + } + + if (y->ts.type == BT_COMPLEX) + { + gfc_error ("%qs argument of %qs intrinsic at %L must have a type " + "of either REAL or INTEGER", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &y->where); + return false; + } + } + + return true; +} + + +bool +gfc_check_dble (gfc_expr *x) +{ + if (x->ts.type == BT_BOZ && !gfc_boz2real (x, gfc_default_double_kind)) + return false; + + if (!numeric_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_digits (gfc_expr *x) +{ + if (!int_or_real_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_dot_product (gfc_expr *vector_a, gfc_expr *vector_b) +{ + switch (vector_a->ts.type) + { + case BT_LOGICAL: + if (!type_check (vector_b, 1, BT_LOGICAL)) + return false; + break; + + case BT_INTEGER: + case BT_REAL: + case BT_COMPLEX: + if (!numeric_check (vector_b, 1)) + return false; + break; + + default: + gfc_error ("%qs argument of %qs intrinsic at %L must be numeric " + "or LOGICAL", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &vector_a->where); + return false; + } + + if (!rank_check (vector_a, 0, 1)) + return false; + + if (!rank_check (vector_b, 1, 1)) + return false; + + if (! identical_dimen_shape (vector_a, 0, vector_b, 0)) + { + gfc_error ("Different shape for arguments %qs and %qs at %L for " + "intrinsic %<dot_product%>", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[1]->name, &vector_a->where); + return false; + } + + return true; +} + + +bool +gfc_check_dprod (gfc_expr *x, gfc_expr *y) +{ + if (!type_check (x, 0, BT_REAL) + || !type_check (y, 1, BT_REAL)) + return false; + + if (x->ts.kind != gfc_default_real_kind) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be default " + "real", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &x->where); + return false; + } + + if (y->ts.kind != gfc_default_real_kind) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be default " + "real", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &y->where); + return false; + } + + return true; +} + +bool +gfc_check_dshift (gfc_expr *i, gfc_expr *j, gfc_expr *shift) +{ + /* i and j cannot both be BOZ literal constants. */ + if (!boz_args_check (i, j)) + return false; + + /* If i is BOZ and j is integer, convert i to type of j. If j is not + an integer, clear the BOZ; otherwise, check that i is an integer. */ + if (i->ts.type == BT_BOZ) + { + if (j->ts.type != BT_INTEGER) + reset_boz (i); + else if (!gfc_boz2int (i, j->ts.kind)) + return false; + } + else if (!type_check (i, 0, BT_INTEGER)) + { + if (j->ts.type == BT_BOZ) + reset_boz (j); + return false; + } + + /* If j is BOZ and i is integer, convert j to type of i. If i is not + an integer, clear the BOZ; otherwise, check that i is an integer. */ + if (j->ts.type == BT_BOZ) + { + if (i->ts.type != BT_INTEGER) + reset_boz (j); + else if (!gfc_boz2int (j, i->ts.kind)) + return false; + } + else if (!type_check (j, 1, BT_INTEGER)) + return false; + + if (!same_type_check (i, 0, j, 1)) + return false; + + if (!type_check (shift, 2, BT_INTEGER)) + return false; + + if (!nonnegative_check ("SHIFT", shift)) + return false; + + if (!less_than_bitsize1 ("I", i, "SHIFT", shift, true)) + return false; + + return true; +} + + +bool +gfc_check_eoshift (gfc_expr *array, gfc_expr *shift, gfc_expr *boundary, + gfc_expr *dim) +{ + int d; + + if (!array_check (array, 0)) + return false; + + if (!type_check (shift, 1, BT_INTEGER)) + return false; + + if (!dim_check (dim, 3, true)) + return false; + + if (!dim_rank_check (dim, array, false)) + return false; + + if (!dim) + d = 1; + else if (dim->expr_type == EXPR_CONSTANT) + gfc_extract_int (dim, &d); + else + d = -1; + + if (array->rank == 1 || shift->rank == 0) + { + if (!scalar_check (shift, 1)) + return false; + } + else if (shift->rank == array->rank - 1) + { + if (d > 0) + { + int i, j; + for (i = 0, j = 0; i < array->rank; i++) + if (i != d - 1) + { + if (!identical_dimen_shape (array, i, shift, j)) + { + gfc_error ("%qs argument of %qs intrinsic at %L has " + "invalid shape in dimension %d (%ld/%ld)", + gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &shift->where, i + 1, + mpz_get_si (array->shape[i]), + mpz_get_si (shift->shape[j])); + return false; + } + + j += 1; + } + } + } + else + { + gfc_error ("%qs argument of intrinsic %qs at %L of must have rank " + "%d or be a scalar", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &shift->where, array->rank - 1); + return false; + } + + if (boundary != NULL) + { + if (!same_type_check (array, 0, boundary, 2)) + return false; + + /* Reject unequal string lengths and emit a better error message than + gfc_check_same_strlen would. */ + if (array->ts.type == BT_CHARACTER) + { + ssize_t len_a, len_b; + + len_a = gfc_var_strlen (array); + len_b = gfc_var_strlen (boundary); + if (len_a != -1 && len_b != -1 && len_a != len_b) + { + gfc_error ("%qs must be of same type and kind as %qs at %L in %qs", + gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic_arg[0]->name, + &boundary->where, gfc_current_intrinsic); + return false; + } + } + + if (array->rank == 1 || boundary->rank == 0) + { + if (!scalar_check (boundary, 2)) + return false; + } + else if (boundary->rank == array->rank - 1) + { + if (d > 0) + { + int i,j; + for (i = 0, j = 0; i < array->rank; i++) + { + if (i != d - 1) + { + if (!identical_dimen_shape (array, i, boundary, j)) + { + gfc_error ("%qs argument of %qs intrinsic at %L has " + "invalid shape in dimension %d (%ld/%ld)", + gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic, &shift->where, i+1, + mpz_get_si (array->shape[i]), + mpz_get_si (boundary->shape[j])); + return false; + } + j += 1; + } + } + } + } + else + { + gfc_error ("%qs argument of intrinsic %qs at %L of must have " + "rank %d or be a scalar", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &shift->where, array->rank - 1); + return false; + } + } + else + { + switch (array->ts.type) + { + case BT_INTEGER: + case BT_LOGICAL: + case BT_REAL: + case BT_COMPLEX: + case BT_CHARACTER: + break; + + default: + gfc_error ("Missing %qs argument to %qs intrinsic at %L for %qs " + "of type %qs", gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic, &array->where, + gfc_current_intrinsic_arg[0]->name, + gfc_typename (array)); + return false; + } + } + + return true; +} + + +bool +gfc_check_float (gfc_expr *a) +{ + if (a->ts.type == BT_BOZ) + { + if (gfc_invalid_boz (G_("BOZ literal constant at %L cannot appear in the" + " FLOAT intrinsic subprogram"), &a->where)) + { + reset_boz (a); + return false; + } + if (!gfc_boz2int (a, gfc_default_integer_kind)) + return false; + } + + if (!type_check (a, 0, BT_INTEGER)) + return false; + + if ((a->ts.kind != gfc_default_integer_kind) + && !gfc_notify_std (GFC_STD_GNU, "non-default INTEGER " + "kind argument to %s intrinsic at %L", + gfc_current_intrinsic, &a->where)) + return false; + + return true; +} + +/* A single complex argument. */ + +bool +gfc_check_fn_c (gfc_expr *a) +{ + if (!type_check (a, 0, BT_COMPLEX)) + return false; + + return true; +} + + +/* A single real argument. */ + +bool +gfc_check_fn_r (gfc_expr *a) +{ + if (!type_check (a, 0, BT_REAL)) + return false; + + return true; +} + +/* A single double argument. */ + +bool +gfc_check_fn_d (gfc_expr *a) +{ + if (!double_check (a, 0)) + return false; + + return true; +} + +/* A single real or complex argument. */ + +bool +gfc_check_fn_rc (gfc_expr *a) +{ + if (!real_or_complex_check (a, 0)) + return false; + + return true; +} + + +bool +gfc_check_fn_rc2008 (gfc_expr *a) +{ + if (!real_or_complex_check (a, 0)) + return false; + + if (a->ts.type == BT_COMPLEX + && !gfc_notify_std (GFC_STD_F2008, "COMPLEX argument %qs " + "of %qs intrinsic at %L", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &a->where)) + return false; + + return true; +} + + +bool +gfc_check_fnum (gfc_expr *unit) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + return true; +} + + +bool +gfc_check_huge (gfc_expr *x) +{ + if (!int_or_real_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_hypot (gfc_expr *x, gfc_expr *y) +{ + if (!type_check (x, 0, BT_REAL)) + return false; + if (!same_type_check (x, 0, y, 1)) + return false; + + return true; +} + + +/* Check that the single argument is an integer. */ + +bool +gfc_check_i (gfc_expr *i) +{ + if (!type_check (i, 0, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_iand_ieor_ior (gfc_expr *i, gfc_expr *j) +{ + /* i and j cannot both be BOZ literal constants. */ + if (!boz_args_check (i, j)) + return false; + + /* If i is BOZ and j is integer, convert i to type of j. */ + if (i->ts.type == BT_BOZ && j->ts.type == BT_INTEGER + && !gfc_boz2int (i, j->ts.kind)) + return false; + + /* If j is BOZ and i is integer, convert j to type of i. */ + if (j->ts.type == BT_BOZ && i->ts.type == BT_INTEGER + && !gfc_boz2int (j, i->ts.kind)) + return false; + + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!type_check (j, 1, BT_INTEGER)) + return false; + + if (i->ts.kind != j->ts.kind) + { + gfc_error ("Arguments of %qs have different kind type parameters " + "at %L", gfc_current_intrinsic, &i->where); + return false; + } + + return true; +} + + +bool +gfc_check_ibits (gfc_expr *i, gfc_expr *pos, gfc_expr *len) +{ + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!type_check (pos, 1, BT_INTEGER)) + return false; + + if (!type_check (len, 2, BT_INTEGER)) + return false; + + if (!nonnegative_check ("pos", pos)) + return false; + + if (!nonnegative_check ("len", len)) + return false; + + if (!less_than_bitsize2 ("i", i, "pos", pos, "len", len)) + return false; + + return true; +} + + +bool +gfc_check_ichar_iachar (gfc_expr *c, gfc_expr *kind) +{ + int i; + + if (!type_check (c, 0, BT_CHARACTER)) + return false; + + if (!kind_check (kind, 1, BT_INTEGER)) + return false; + + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + if (c->expr_type == EXPR_VARIABLE || c->expr_type == EXPR_SUBSTRING) + { + gfc_expr *start; + gfc_expr *end; + gfc_ref *ref; + + /* Substring references don't have the charlength set. */ + ref = c->ref; + while (ref && ref->type != REF_SUBSTRING) + ref = ref->next; + + gcc_assert (ref == NULL || ref->type == REF_SUBSTRING); + + if (!ref) + { + /* Check that the argument is length one. Non-constant lengths + can't be checked here, so assume they are ok. */ + if (c->ts.u.cl && c->ts.u.cl->length) + { + /* If we already have a length for this expression then use it. */ + if (c->ts.u.cl->length->expr_type != EXPR_CONSTANT) + return true; + i = mpz_get_si (c->ts.u.cl->length->value.integer); + } + else + return true; + } + else + { + start = ref->u.ss.start; + end = ref->u.ss.end; + + gcc_assert (start); + if (end == NULL || end->expr_type != EXPR_CONSTANT + || start->expr_type != EXPR_CONSTANT) + return true; + + i = mpz_get_si (end->value.integer) + 1 + - mpz_get_si (start->value.integer); + } + } + else + return true; + + if (i != 1) + { + gfc_error ("Argument of %s at %L must be of length one", + gfc_current_intrinsic, &c->where); + return false; + } + + return true; +} + + +bool +gfc_check_idnint (gfc_expr *a) +{ + if (!double_check (a, 0)) + return false; + + return true; +} + + +bool +gfc_check_index (gfc_expr *string, gfc_expr *substring, gfc_expr *back, + gfc_expr *kind) +{ + if (!type_check (string, 0, BT_CHARACTER) + || !type_check (substring, 1, BT_CHARACTER)) + return false; + + if (back != NULL && !type_check (back, 2, BT_LOGICAL)) + return false; + + if (!kind_check (kind, 3, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + if (string->ts.kind != substring->ts.kind) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be the same " + "kind as %qs", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &substring->where, + gfc_current_intrinsic_arg[0]->name); + return false; + } + + return true; +} + + +bool +gfc_check_int (gfc_expr *x, gfc_expr *kind) +{ + /* BOZ is dealt within simplify_int*. */ + if (x->ts.type == BT_BOZ) + return true; + + if (!numeric_check (x, 0)) + return false; + + if (!kind_check (kind, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_intconv (gfc_expr *x) +{ + if (strcmp (gfc_current_intrinsic, "short") == 0 + || strcmp (gfc_current_intrinsic, "long") == 0) + { + gfc_error ("%qs intrinsic subprogram at %L has been removed. " + "Use INT intrinsic subprogram.", gfc_current_intrinsic, + &x->where); + return false; + } + + /* BOZ is dealt within simplify_int*. */ + if (x->ts.type == BT_BOZ) + return true; + + if (!numeric_check (x, 0)) + return false; + + return true; +} + +bool +gfc_check_ishft (gfc_expr *i, gfc_expr *shift) +{ + if (!type_check (i, 0, BT_INTEGER) + || !type_check (shift, 1, BT_INTEGER)) + return false; + + if (!less_than_bitsize1 ("I", i, NULL, shift, true)) + return false; + + return true; +} + + +bool +gfc_check_ishftc (gfc_expr *i, gfc_expr *shift, gfc_expr *size) +{ + if (!type_check (i, 0, BT_INTEGER) + || !type_check (shift, 1, BT_INTEGER)) + return false; + + if (size != NULL) + { + int i2, i3; + + if (!type_check (size, 2, BT_INTEGER)) + return false; + + if (!less_than_bitsize1 ("I", i, "SIZE", size, true)) + return false; + + if (size->expr_type == EXPR_CONSTANT) + { + gfc_extract_int (size, &i3); + if (i3 <= 0) + { + gfc_error ("SIZE at %L must be positive", &size->where); + return false; + } + + if (shift->expr_type == EXPR_CONSTANT) + { + gfc_extract_int (shift, &i2); + if (i2 < 0) + i2 = -i2; + + if (i2 > i3) + { + gfc_error ("The absolute value of SHIFT at %L must be less " + "than or equal to SIZE at %L", &shift->where, + &size->where); + return false; + } + } + } + } + else if (!less_than_bitsize1 ("I", i, NULL, shift, true)) + return false; + + return true; +} + + +bool +gfc_check_kill (gfc_expr *pid, gfc_expr *sig) +{ + if (!type_check (pid, 0, BT_INTEGER)) + return false; + + if (!scalar_check (pid, 0)) + return false; + + if (!type_check (sig, 1, BT_INTEGER)) + return false; + + if (!scalar_check (sig, 1)) + return false; + + return true; +} + + +bool +gfc_check_kill_sub (gfc_expr *pid, gfc_expr *sig, gfc_expr *status) +{ + if (!type_check (pid, 0, BT_INTEGER)) + return false; + + if (!scalar_check (pid, 0)) + return false; + + if (!type_check (sig, 1, BT_INTEGER)) + return false; + + if (!scalar_check (sig, 1)) + return false; + + if (status) + { + if (!type_check (status, 2, BT_INTEGER)) + return false; + + if (!scalar_check (status, 2)) + return false; + + if (status->expr_type != EXPR_VARIABLE) + { + gfc_error ("STATUS at %L shall be an INTENT(OUT) variable", + &status->where); + return false; + } + + if (status->expr_type == EXPR_VARIABLE + && status->symtree && status->symtree->n.sym + && status->symtree->n.sym->attr.intent == INTENT_IN) + { + gfc_error ("%qs at %L shall be an INTENT(OUT) variable", + status->symtree->name, &status->where); + return false; + } + } + + return true; +} + + +bool +gfc_check_kind (gfc_expr *x) +{ + if (gfc_invalid_null_arg (x)) + return false; + + if (gfc_bt_struct (x->ts.type) || x->ts.type == BT_CLASS) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be of " + "intrinsic type", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &x->where); + return false; + } + if (x->ts.type == BT_PROCEDURE) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a data entity", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &x->where); + return false; + } + + return true; +} + + +bool +gfc_check_lbound (gfc_expr *array, gfc_expr *dim, gfc_expr *kind) +{ + if (!array_check (array, 0)) + return false; + + if (!dim_check (dim, 1, false)) + return false; + + if (!dim_rank_check (dim, array, 1)) + return false; + + if (!kind_check (kind, 2, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + return true; +} + + +bool +gfc_check_lcobound (gfc_expr *coarray, gfc_expr *dim, gfc_expr *kind) +{ + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %C, use %<-fcoarray=%> to enable"); + return false; + } + + if (!coarray_check (coarray, 0)) + return false; + + if (dim != NULL) + { + if (!dim_check (dim, 1, false)) + return false; + + if (!dim_corank_check (dim, coarray)) + return false; + } + + if (!kind_check (kind, 2, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_len_lentrim (gfc_expr *s, gfc_expr *kind) +{ + if (!type_check (s, 0, BT_CHARACTER)) + return false; + + if (gfc_invalid_null_arg (s)) + return false; + + if (!kind_check (kind, 1, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + return true; +} + + +bool +gfc_check_lge_lgt_lle_llt (gfc_expr *a, gfc_expr *b) +{ + if (!type_check (a, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (a, 0, gfc_default_character_kind)) + return false; + + if (!type_check (b, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (b, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_link (gfc_expr *path1, gfc_expr *path2) +{ + if (!type_check (path1, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (path1, 0, gfc_default_character_kind)) + return false; + + if (!type_check (path2, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (path2, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_link_sub (gfc_expr *path1, gfc_expr *path2, gfc_expr *status) +{ + if (!type_check (path1, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (path1, 0, gfc_default_character_kind)) + return false; + + if (!type_check (path2, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (path2, 0, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER)) + return false; + + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_loc (gfc_expr *expr) +{ + return variable_check (expr, 0, true); +} + + +bool +gfc_check_symlnk (gfc_expr *path1, gfc_expr *path2) +{ + if (!type_check (path1, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (path1, 0, gfc_default_character_kind)) + return false; + + if (!type_check (path2, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (path2, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_symlnk_sub (gfc_expr *path1, gfc_expr *path2, gfc_expr *status) +{ + if (!type_check (path1, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (path1, 0, gfc_default_character_kind)) + return false; + + if (!type_check (path2, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (path2, 1, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER)) + return false; + + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_logical (gfc_expr *a, gfc_expr *kind) +{ + if (!type_check (a, 0, BT_LOGICAL)) + return false; + if (!kind_check (kind, 1, BT_LOGICAL)) + return false; + + return true; +} + + +/* Min/max family. */ + +static bool +min_max_args (gfc_actual_arglist *args) +{ + gfc_actual_arglist *arg; + int i, j, nargs, *nlabels, nlabelless; + bool a1 = false, a2 = false; + + if (args == NULL || args->next == NULL) + { + gfc_error ("Intrinsic %qs at %L must have at least two arguments", + gfc_current_intrinsic, gfc_current_intrinsic_where); + return false; + } + + if (!args->name) + a1 = true; + + if (!args->next->name) + a2 = true; + + nargs = 0; + for (arg = args; arg; arg = arg->next) + if (arg->name) + nargs++; + + if (nargs == 0) + return true; + + /* Note: Having a keywordless argument after an "arg=" is checked before. */ + nlabelless = 0; + nlabels = XALLOCAVEC (int, nargs); + for (arg = args, i = 0; arg; arg = arg->next, i++) + if (arg->name) + { + int n; + char *endp; + + if (arg->name[0] != 'a' || arg->name[1] < '1' || arg->name[1] > '9') + goto unknown; + n = strtol (&arg->name[1], &endp, 10); + if (endp[0] != '\0') + goto unknown; + if (n <= 0) + goto unknown; + if (n <= nlabelless) + goto duplicate; + nlabels[i] = n; + if (n == 1) + a1 = true; + if (n == 2) + a2 = true; + } + else + nlabelless++; + + if (!a1 || !a2) + { + gfc_error ("Missing %qs argument to the %s intrinsic at %L", + !a1 ? "a1" : "a2", gfc_current_intrinsic, + gfc_current_intrinsic_where); + return false; + } + + /* Check for duplicates. */ + for (i = 0; i < nargs; i++) + for (j = i + 1; j < nargs; j++) + if (nlabels[i] == nlabels[j]) + goto duplicate; + + return true; + +duplicate: + gfc_error ("Duplicate argument %qs at %L to intrinsic %s", arg->name, + &arg->expr->where, gfc_current_intrinsic); + return false; + +unknown: + gfc_error ("Unknown argument %qs at %L to intrinsic %s", arg->name, + &arg->expr->where, gfc_current_intrinsic); + return false; +} + + +static bool +check_rest (bt type, int kind, gfc_actual_arglist *arglist) +{ + gfc_actual_arglist *arg, *tmp; + gfc_expr *x; + int m, n; + + if (!min_max_args (arglist)) + return false; + + for (arg = arglist, n=1; arg; arg = arg->next, n++) + { + x = arg->expr; + if (x->ts.type != type || x->ts.kind != kind) + { + if (x->ts.type == type) + { + if (x->ts.type == BT_CHARACTER) + { + gfc_error ("Different character kinds at %L", &x->where); + return false; + } + if (!gfc_notify_std (GFC_STD_GNU, "Different type " + "kinds at %L", &x->where)) + return false; + } + else + { + gfc_error ("%<a%d%> argument of %qs intrinsic at %L must be " + "%s(%d)", n, gfc_current_intrinsic, &x->where, + gfc_basic_typename (type), kind); + return false; + } + } + + for (tmp = arglist, m=1; tmp != arg; tmp = tmp->next, m++) + if (!gfc_check_conformance (tmp->expr, x, + _("arguments 'a%d' and 'a%d' for " + "intrinsic '%s'"), m, n, + gfc_current_intrinsic)) + return false; + } + + return true; +} + + +bool +gfc_check_min_max (gfc_actual_arglist *arg) +{ + gfc_expr *x; + + if (!min_max_args (arg)) + return false; + + x = arg->expr; + + if (x->ts.type == BT_CHARACTER) + { + if (!gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with CHARACTER argument at %L", + gfc_current_intrinsic, &x->where)) + return false; + } + else if (x->ts.type != BT_INTEGER && x->ts.type != BT_REAL) + { + gfc_error ("%<a1%> argument of %qs intrinsic at %L must be INTEGER, " + "REAL or CHARACTER", gfc_current_intrinsic, &x->where); + return false; + } + + return check_rest (x->ts.type, x->ts.kind, arg); +} + + +bool +gfc_check_min_max_integer (gfc_actual_arglist *arg) +{ + return check_rest (BT_INTEGER, gfc_default_integer_kind, arg); +} + + +bool +gfc_check_min_max_real (gfc_actual_arglist *arg) +{ + return check_rest (BT_REAL, gfc_default_real_kind, arg); +} + + +bool +gfc_check_min_max_double (gfc_actual_arglist *arg) +{ + return check_rest (BT_REAL, gfc_default_double_kind, arg); +} + + +/* End of min/max family. */ + +bool +gfc_check_malloc (gfc_expr *size) +{ + if (!type_check (size, 0, BT_INTEGER)) + return false; + + if (!scalar_check (size, 0)) + return false; + + return true; +} + + +bool +gfc_check_matmul (gfc_expr *matrix_a, gfc_expr *matrix_b) +{ + if ((matrix_a->ts.type != BT_LOGICAL) && !gfc_numeric_ts (&matrix_a->ts)) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be numeric " + "or LOGICAL", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &matrix_a->where); + return false; + } + + if ((matrix_b->ts.type != BT_LOGICAL) && !gfc_numeric_ts (&matrix_b->ts)) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be numeric " + "or LOGICAL", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &matrix_b->where); + return false; + } + + if ((matrix_a->ts.type == BT_LOGICAL && gfc_numeric_ts (&matrix_b->ts)) + || (gfc_numeric_ts (&matrix_a->ts) && matrix_b->ts.type == BT_LOGICAL)) + { + gfc_error ("Argument types of %qs intrinsic at %L must match (%s/%s)", + gfc_current_intrinsic, &matrix_a->where, + gfc_typename(&matrix_a->ts), gfc_typename(&matrix_b->ts)); + return false; + } + + switch (matrix_a->rank) + { + case 1: + if (!rank_check (matrix_b, 1, 2)) + return false; + /* Check for case matrix_a has shape(m), matrix_b has shape (m, k). */ + if (!identical_dimen_shape (matrix_a, 0, matrix_b, 0)) + { + gfc_error ("Different shape on dimension 1 for arguments %qs " + "and %qs at %L for intrinsic matmul", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[1]->name, &matrix_a->where); + return false; + } + break; + + case 2: + if (matrix_b->rank != 2) + { + if (!rank_check (matrix_b, 1, 1)) + return false; + } + /* matrix_b has rank 1 or 2 here. Common check for the cases + - matrix_a has shape (n,m) and matrix_b has shape (m, k) + - matrix_a has shape (n,m) and matrix_b has shape (m). */ + if (!identical_dimen_shape (matrix_a, 1, matrix_b, 0)) + { + gfc_error ("Different shape on dimension 2 for argument %qs and " + "dimension 1 for argument %qs at %L for intrinsic " + "matmul", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[1]->name, &matrix_a->where); + return false; + } + break; + + default: + gfc_error ("%qs argument of %qs intrinsic at %L must be of rank " + "1 or 2", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &matrix_a->where); + return false; + } + + return true; +} + + +/* Whoever came up with this interface was probably on something. + The possibilities for the occupation of the second and third + parameters are: + + Arg #2 Arg #3 + NULL NULL + DIM NULL + MASK NULL + NULL MASK minloc(array, mask=m) + DIM MASK + + I.e. in the case of minloc(array,mask), mask will be in the second + position of the argument list and we'll have to fix that up. Also, + add the BACK argument if that isn't present. */ + +bool +gfc_check_minloc_maxloc (gfc_actual_arglist *ap) +{ + gfc_expr *a, *m, *d, *k, *b; + + a = ap->expr; + if (!int_or_real_or_char_check_f2003 (a, 0) || !array_check (a, 0)) + return false; + + d = ap->next->expr; + m = ap->next->next->expr; + k = ap->next->next->next->expr; + b = ap->next->next->next->next->expr; + + if (b) + { + if (!type_check (b, 4, BT_LOGICAL) || !scalar_check (b,4)) + return false; + } + else + { + b = gfc_get_logical_expr (gfc_logical_4_kind, NULL, 0); + ap->next->next->next->next->expr = b; + } + + if (m == NULL && d != NULL && d->ts.type == BT_LOGICAL + && ap->next->name == NULL) + { + m = d; + d = NULL; + ap->next->expr = NULL; + ap->next->next->expr = m; + } + + if (!dim_check (d, 1, false)) + return false; + + if (!dim_rank_check (d, a, 0)) + return false; + + if (m != NULL && !type_check (m, 2, BT_LOGICAL)) + return false; + + if (m != NULL + && !gfc_check_conformance (a, m, + _("arguments '%s' and '%s' for intrinsic %s"), + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic)) + return false; + + if (!kind_check (k, 1, BT_INTEGER)) + return false; + + return true; +} + +/* Check function for findloc. Mostly like gfc_check_minloc_maxloc + above, with the additional "value" argument. */ + +bool +gfc_check_findloc (gfc_actual_arglist *ap) +{ + gfc_expr *a, *v, *m, *d, *k, *b; + bool a1, v1; + + a = ap->expr; + if (!intrinsic_type_check (a, 0) || !array_check (a, 0)) + return false; + + v = ap->next->expr; + if (!intrinsic_type_check (v, 1) || !scalar_check (v,1)) + return false; + + /* Check if the type are both logical. */ + a1 = a->ts.type == BT_LOGICAL; + v1 = v->ts.type == BT_LOGICAL; + if ((a1 && !v1) || (!a1 && v1)) + goto incompat; + + /* Check if the type are both character. */ + a1 = a->ts.type == BT_CHARACTER; + v1 = v->ts.type == BT_CHARACTER; + if ((a1 && !v1) || (!a1 && v1)) + goto incompat; + + /* Check the kind of the characters argument match. */ + if (a1 && v1 && a->ts.kind != v->ts.kind) + goto incompat; + + d = ap->next->next->expr; + m = ap->next->next->next->expr; + k = ap->next->next->next->next->expr; + b = ap->next->next->next->next->next->expr; + + if (b) + { + if (!type_check (b, 5, BT_LOGICAL) || !scalar_check (b,4)) + return false; + } + else + { + b = gfc_get_logical_expr (gfc_logical_4_kind, NULL, 0); + ap->next->next->next->next->next->expr = b; + } + + if (m == NULL && d != NULL && d->ts.type == BT_LOGICAL + && ap->next->name == NULL) + { + m = d; + d = NULL; + ap->next->next->expr = NULL; + ap->next->next->next->expr = m; + } + + if (!dim_check (d, 2, false)) + return false; + + if (!dim_rank_check (d, a, 0)) + return false; + + if (m != NULL && !type_check (m, 3, BT_LOGICAL)) + return false; + + if (m != NULL + && !gfc_check_conformance (a, m, + _("arguments '%s' and '%s' for intrinsic %s"), + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[3]->name, + gfc_current_intrinsic)) + return false; + + if (!kind_check (k, 1, BT_INTEGER)) + return false; + + return true; + +incompat: + gfc_error ("Argument %qs of %qs intrinsic at %L must be in type " + "conformance to argument %qs at %L", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &a->where, + gfc_current_intrinsic_arg[1]->name, &v->where); + return false; +} + + +/* Similar to minloc/maxloc, the argument list might need to be + reordered for the MINVAL, MAXVAL, PRODUCT, and SUM intrinsics. The + difference is that MINLOC/MAXLOC take an additional KIND argument. + The possibilities are: + + Arg #2 Arg #3 + NULL NULL + DIM NULL + MASK NULL + NULL MASK minval(array, mask=m) + DIM MASK + + I.e. in the case of minval(array,mask), mask will be in the second + position of the argument list and we'll have to fix that up. */ + +static bool +check_reduction (gfc_actual_arglist *ap) +{ + gfc_expr *a, *m, *d; + + a = ap->expr; + d = ap->next->expr; + m = ap->next->next->expr; + + if (m == NULL && d != NULL && d->ts.type == BT_LOGICAL + && ap->next->name == NULL) + { + m = d; + d = NULL; + ap->next->expr = NULL; + ap->next->next->expr = m; + } + + if (!dim_check (d, 1, false)) + return false; + + if (!dim_rank_check (d, a, 0)) + return false; + + if (m != NULL && !type_check (m, 2, BT_LOGICAL)) + return false; + + if (m != NULL + && !gfc_check_conformance (a, m, + _("arguments '%s' and '%s' for intrinsic %s"), + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic)) + return false; + + return true; +} + + +bool +gfc_check_minval_maxval (gfc_actual_arglist *ap) +{ + if (!int_or_real_or_char_check_f2003 (ap->expr, 0) + || !array_check (ap->expr, 0)) + return false; + + return check_reduction (ap); +} + + +bool +gfc_check_product_sum (gfc_actual_arglist *ap) +{ + if (!numeric_check (ap->expr, 0) + || !array_check (ap->expr, 0)) + return false; + + return check_reduction (ap); +} + + +/* For IANY, IALL and IPARITY. */ + +bool +gfc_check_mask (gfc_expr *i, gfc_expr *kind) +{ + int k; + + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!nonnegative_check ("I", i)) + return false; + + if (!kind_check (kind, 1, BT_INTEGER)) + return false; + + if (kind) + gfc_extract_int (kind, &k); + else + k = gfc_default_integer_kind; + + if (!less_than_bitsizekind ("I", i, k)) + return false; + + return true; +} + + +bool +gfc_check_transf_bit_intrins (gfc_actual_arglist *ap) +{ + if (ap->expr->ts.type != BT_INTEGER) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &ap->expr->where); + return false; + } + + if (!array_check (ap->expr, 0)) + return false; + + return check_reduction (ap); +} + + +bool +gfc_check_merge (gfc_expr *tsource, gfc_expr *fsource, gfc_expr *mask) +{ + if (gfc_invalid_null_arg (tsource)) + return false; + + if (gfc_invalid_null_arg (fsource)) + return false; + + if (!same_type_check (tsource, 0, fsource, 1)) + return false; + + if (!type_check (mask, 2, BT_LOGICAL)) + return false; + + if (tsource->ts.type == BT_CHARACTER) + return gfc_check_same_strlen (tsource, fsource, "MERGE intrinsic"); + + return true; +} + + +bool +gfc_check_merge_bits (gfc_expr *i, gfc_expr *j, gfc_expr *mask) +{ + /* i and j cannot both be BOZ literal constants. */ + if (!boz_args_check (i, j)) + return false; + + /* If i is BOZ and j is integer, convert i to type of j. */ + if (i->ts.type == BT_BOZ && j->ts.type == BT_INTEGER + && !gfc_boz2int (i, j->ts.kind)) + return false; + + /* If j is BOZ and i is integer, convert j to type of i. */ + if (j->ts.type == BT_BOZ && i->ts.type == BT_INTEGER + && !gfc_boz2int (j, i->ts.kind)) + return false; + + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!type_check (j, 1, BT_INTEGER)) + return false; + + if (!same_type_check (i, 0, j, 1)) + return false; + + if (mask->ts.type == BT_BOZ && !gfc_boz2int(mask, i->ts.kind)) + return false; + + if (!type_check (mask, 2, BT_INTEGER)) + return false; + + if (!same_type_check (i, 0, mask, 2)) + return false; + + return true; +} + + +bool +gfc_check_move_alloc (gfc_expr *from, gfc_expr *to) +{ + if (!variable_check (from, 0, false)) + return false; + if (!allocatable_check (from, 0)) + return false; + if (gfc_is_coindexed (from)) + { + gfc_error ("The FROM argument to MOVE_ALLOC at %L shall not be " + "coindexed", &from->where); + return false; + } + + if (!variable_check (to, 1, false)) + return false; + if (!allocatable_check (to, 1)) + return false; + if (gfc_is_coindexed (to)) + { + gfc_error ("The TO argument to MOVE_ALLOC at %L shall not be " + "coindexed", &to->where); + return false; + } + + if (from->ts.type == BT_CLASS && to->ts.type == BT_DERIVED) + { + gfc_error ("The TO arguments in MOVE_ALLOC at %L must be " + "polymorphic if FROM is polymorphic", + &to->where); + return false; + } + + if (!same_type_check (to, 1, from, 0)) + return false; + + if (to->rank != from->rank) + { + gfc_error ("The FROM and TO arguments of the MOVE_ALLOC intrinsic at %L " + "must have the same rank %d/%d", &to->where, from->rank, + to->rank); + return false; + } + + /* IR F08/0040; cf. 12-006A. */ + if (gfc_get_corank (to) != gfc_get_corank (from)) + { + gfc_error ("The FROM and TO arguments of the MOVE_ALLOC intrinsic at %L " + "must have the same corank %d/%d", &to->where, + gfc_get_corank (from), gfc_get_corank (to)); + return false; + } + + /* This is based losely on F2003 12.4.1.7. It is intended to prevent + the likes of to = sym->cmp1->cmp2 and from = sym->cmp1, where cmp1 + and cmp2 are allocatable. After the allocation is transferred, + the 'to' chain is broken by the nullification of the 'from'. A bit + of reflection reveals that this can only occur for derived types + with recursive allocatable components. */ + if (to->expr_type == EXPR_VARIABLE && from->expr_type == EXPR_VARIABLE + && !strcmp (to->symtree->n.sym->name, from->symtree->n.sym->name)) + { + gfc_ref *to_ref, *from_ref; + to_ref = to->ref; + from_ref = from->ref; + bool aliasing = true; + + for (; from_ref && to_ref; + from_ref = from_ref->next, to_ref = to_ref->next) + { + if (to_ref->type != from->ref->type) + aliasing = false; + else if (to_ref->type == REF_ARRAY + && to_ref->u.ar.type != AR_FULL + && from_ref->u.ar.type != AR_FULL) + /* Play safe; assume sections and elements are different. */ + aliasing = false; + else if (to_ref->type == REF_COMPONENT + && to_ref->u.c.component != from_ref->u.c.component) + aliasing = false; + + if (!aliasing) + break; + } + + if (aliasing) + { + gfc_error ("The FROM and TO arguments at %L violate aliasing " + "restrictions (F2003 12.4.1.7)", &to->where); + return false; + } + } + + /* CLASS arguments: Make sure the vtab of from is present. */ + if (to->ts.type == BT_CLASS && !UNLIMITED_POLY (from)) + gfc_find_vtab (&from->ts); + + return true; +} + + +bool +gfc_check_nearest (gfc_expr *x, gfc_expr *s) +{ + if (!type_check (x, 0, BT_REAL)) + return false; + + if (!type_check (s, 1, BT_REAL)) + return false; + + if (s->expr_type == EXPR_CONSTANT) + { + if (mpfr_sgn (s->value.real) == 0) + { + gfc_error ("Argument %<S%> of NEAREST at %L shall not be zero", + &s->where); + return false; + } + } + + return true; +} + + +bool +gfc_check_new_line (gfc_expr *a) +{ + if (!type_check (a, 0, BT_CHARACTER)) + return false; + + return true; +} + + +bool +gfc_check_norm2 (gfc_expr *array, gfc_expr *dim) +{ + if (!type_check (array, 0, BT_REAL)) + return false; + + if (!array_check (array, 0)) + return false; + + if (!dim_rank_check (dim, array, false)) + return false; + + return true; +} + +bool +gfc_check_null (gfc_expr *mold) +{ + symbol_attribute attr; + + if (mold == NULL) + return true; + + if (!variable_check (mold, 0, true)) + return false; + + attr = gfc_variable_attr (mold, NULL); + + if (!attr.pointer && !attr.proc_pointer && !attr.allocatable) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a POINTER, " + "ALLOCATABLE or procedure pointer", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &mold->where); + return false; + } + + if (attr.allocatable + && !gfc_notify_std (GFC_STD_F2003, "NULL intrinsic with " + "allocatable MOLD at %L", &mold->where)) + return false; + + /* F2008, C1242. */ + if (gfc_is_coindexed (mold)) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be " + "coindexed", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &mold->where); + return false; + } + + return true; +} + + +bool +gfc_check_pack (gfc_expr *array, gfc_expr *mask, gfc_expr *vector) +{ + if (!array_check (array, 0)) + return false; + + if (!type_check (mask, 1, BT_LOGICAL)) + return false; + + if (!gfc_check_conformance (array, mask, + _("arguments '%s' and '%s' for intrinsic '%s'"), + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic)) + return false; + + if (vector != NULL) + { + mpz_t array_size, vector_size; + bool have_array_size, have_vector_size; + + if (!same_type_check (array, 0, vector, 2)) + return false; + + if (!rank_check (vector, 2, 1)) + return false; + + /* VECTOR requires at least as many elements as MASK + has .TRUE. values. */ + have_array_size = gfc_array_size(array, &array_size); + have_vector_size = gfc_array_size(vector, &vector_size); + + if (have_vector_size + && (mask->expr_type == EXPR_ARRAY + || (mask->expr_type == EXPR_CONSTANT + && have_array_size))) + { + int mask_true_values = 0; + + if (mask->expr_type == EXPR_ARRAY) + { + gfc_constructor *mask_ctor; + mask_ctor = gfc_constructor_first (mask->value.constructor); + while (mask_ctor) + { + if (mask_ctor->expr->expr_type != EXPR_CONSTANT) + { + mask_true_values = 0; + break; + } + + if (mask_ctor->expr->value.logical) + mask_true_values++; + + mask_ctor = gfc_constructor_next (mask_ctor); + } + } + else if (mask->expr_type == EXPR_CONSTANT && mask->value.logical) + mask_true_values = mpz_get_si (array_size); + + if (mpz_get_si (vector_size) < mask_true_values) + { + gfc_error ("%qs argument of %qs intrinsic at %L must " + "provide at least as many elements as there " + "are .TRUE. values in %qs (%ld/%d)", + gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic, &vector->where, + gfc_current_intrinsic_arg[1]->name, + mpz_get_si (vector_size), mask_true_values); + return false; + } + } + + if (have_array_size) + mpz_clear (array_size); + if (have_vector_size) + mpz_clear (vector_size); + } + + return true; +} + + +bool +gfc_check_parity (gfc_expr *mask, gfc_expr *dim) +{ + if (!type_check (mask, 0, BT_LOGICAL)) + return false; + + if (!array_check (mask, 0)) + return false; + + if (!dim_rank_check (dim, mask, false)) + return false; + + return true; +} + + +bool +gfc_check_precision (gfc_expr *x) +{ + if (!real_or_complex_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_present (gfc_expr *a) +{ + gfc_symbol *sym; + + if (!variable_check (a, 0, true)) + return false; + + sym = a->symtree->n.sym; + if (!sym->attr.dummy) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be of a " + "dummy variable", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &a->where); + return false; + } + + /* For CLASS, the optional attribute might be set at either location. */ + if ((sym->ts.type != BT_CLASS || !CLASS_DATA (sym)->attr.optional) + && !sym->attr.optional) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be of " + "an OPTIONAL dummy variable", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &a->where); + return false; + } + + /* 13.14.82 PRESENT(A) + ...... + Argument. A shall be the name of an optional dummy argument that is + accessible in the subprogram in which the PRESENT function reference + appears... */ + + if (a->ref != NULL + && !(a->ref->next == NULL && a->ref->type == REF_ARRAY + && (a->ref->u.ar.type == AR_FULL + || (a->ref->u.ar.type == AR_ELEMENT + && a->ref->u.ar.as->rank == 0)))) + { + gfc_error ("%qs argument of %qs intrinsic at %L must not be a " + "subobject of %qs", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &a->where, sym->name); + return false; + } + + return true; +} + + +bool +gfc_check_radix (gfc_expr *x) +{ + if (!int_or_real_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_range (gfc_expr *x) +{ + if (!numeric_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_rank (gfc_expr *a) +{ + /* Any data object is allowed; a "data object" is a "constant (4.1.3), + variable (6), or subobject of a constant (2.4.3.2.3)" (F2008, 1.3.45). */ + + bool is_variable = true; + + /* Functions returning pointers are regarded as variable, cf. F2008, R602. */ + if (a->expr_type == EXPR_FUNCTION) + is_variable = a->value.function.esym + ? a->value.function.esym->result->attr.pointer + : a->symtree->n.sym->result->attr.pointer; + + if (a->expr_type == EXPR_OP + || a->expr_type == EXPR_NULL + || a->expr_type == EXPR_COMPCALL + || a->expr_type == EXPR_PPC + || a->ts.type == BT_PROCEDURE + || !is_variable) + { + gfc_error ("The argument of the RANK intrinsic at %L must be a data " + "object", &a->where); + return false; + } + + return true; +} + + +bool +gfc_check_real (gfc_expr *a, gfc_expr *kind) +{ + if (!kind_check (kind, 1, BT_REAL)) + return false; + + /* BOZ is dealt with in gfc_simplify_real. */ + if (a->ts.type == BT_BOZ) + return true; + + if (!numeric_check (a, 0)) + return false; + + return true; +} + + +bool +gfc_check_rename (gfc_expr *path1, gfc_expr *path2) +{ + if (!type_check (path1, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (path1, 0, gfc_default_character_kind)) + return false; + + if (!type_check (path2, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (path2, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_rename_sub (gfc_expr *path1, gfc_expr *path2, gfc_expr *status) +{ + if (!type_check (path1, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (path1, 0, gfc_default_character_kind)) + return false; + + if (!type_check (path2, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (path2, 1, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER)) + return false; + + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_repeat (gfc_expr *x, gfc_expr *y) +{ + if (!type_check (x, 0, BT_CHARACTER)) + return false; + + if (!scalar_check (x, 0)) + return false; + + if (!type_check (y, 0, BT_INTEGER)) + return false; + + if (!scalar_check (y, 1)) + return false; + + return true; +} + + +bool +gfc_check_reshape (gfc_expr *source, gfc_expr *shape, + gfc_expr *pad, gfc_expr *order) +{ + mpz_t size; + mpz_t nelems; + int shape_size; + bool shape_is_const; + + if (!array_check (source, 0)) + return false; + + if (!rank_check (shape, 1, 1)) + return false; + + if (!type_check (shape, 1, BT_INTEGER)) + return false; + + if (!gfc_array_size (shape, &size)) + { + gfc_error ("%<shape%> argument of %<reshape%> intrinsic at %L must be an " + "array of constant size", &shape->where); + return false; + } + + shape_size = mpz_get_ui (size); + mpz_clear (size); + + if (shape_size <= 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L is empty", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &shape->where); + return false; + } + else if (shape_size > GFC_MAX_DIMENSIONS) + { + gfc_error ("%<shape%> argument of %<reshape%> intrinsic at %L has more " + "than %d elements", &shape->where, GFC_MAX_DIMENSIONS); + return false; + } + + gfc_simplify_expr (shape, 0); + shape_is_const = gfc_is_constant_expr (shape); + + if (shape->expr_type == EXPR_ARRAY && shape_is_const) + { + gfc_expr *e; + int i, extent; + for (i = 0; i < shape_size; ++i) + { + e = gfc_constructor_lookup_expr (shape->value.constructor, i); + if (e->expr_type != EXPR_CONSTANT) + continue; + + gfc_extract_int (e, &extent); + if (extent < 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L has " + "negative element (%d)", + gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &shape->where, extent); + return false; + } + } + } + + if (pad != NULL) + { + if (!same_type_check (source, 0, pad, 2)) + return false; + + if (!array_check (pad, 2)) + return false; + } + + if (order != NULL) + { + if (!array_check (order, 3)) + return false; + + if (!type_check (order, 3, BT_INTEGER)) + return false; + + if (order->expr_type == EXPR_ARRAY && gfc_is_constant_expr (order)) + { + int i, order_size, dim, perm[GFC_MAX_DIMENSIONS]; + gfc_expr *e; + + for (i = 0; i < GFC_MAX_DIMENSIONS; ++i) + perm[i] = 0; + + gfc_array_size (order, &size); + order_size = mpz_get_ui (size); + mpz_clear (size); + + if (order_size != shape_size) + { + gfc_error ("%qs argument of %qs intrinsic at %L " + "has wrong number of elements (%d/%d)", + gfc_current_intrinsic_arg[3]->name, + gfc_current_intrinsic, &order->where, + order_size, shape_size); + return false; + } + + for (i = 1; i <= order_size; ++i) + { + e = gfc_constructor_lookup_expr (order->value.constructor, i-1); + if (e->expr_type != EXPR_CONSTANT) + continue; + + gfc_extract_int (e, &dim); + + if (dim < 1 || dim > order_size) + { + gfc_error ("%qs argument of %qs intrinsic at %L " + "has out-of-range dimension (%d)", + gfc_current_intrinsic_arg[3]->name, + gfc_current_intrinsic, &e->where, dim); + return false; + } + + if (perm[dim-1] != 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L has " + "invalid permutation of dimensions (dimension " + "%qd duplicated)", + gfc_current_intrinsic_arg[3]->name, + gfc_current_intrinsic, &e->where, dim); + return false; + } + + perm[dim-1] = 1; + } + } + } + + if (pad == NULL && shape->expr_type == EXPR_ARRAY && shape_is_const + && !(source->expr_type == EXPR_VARIABLE && source->symtree->n.sym->as + && source->symtree->n.sym->as->type == AS_ASSUMED_SIZE)) + { + /* Check the match in size between source and destination. */ + if (gfc_array_size (source, &nelems)) + { + gfc_constructor *c; + bool test; + + + mpz_init_set_ui (size, 1); + for (c = gfc_constructor_first (shape->value.constructor); + c; c = gfc_constructor_next (c)) + mpz_mul (size, size, c->expr->value.integer); + + test = mpz_cmp (nelems, size) < 0 && mpz_cmp_ui (size, 0) > 0; + mpz_clear (nelems); + mpz_clear (size); + + if (test) + { + gfc_error ("Without padding, there are not enough elements " + "in the intrinsic RESHAPE source at %L to match " + "the shape", &source->where); + return false; + } + } + } + + return true; +} + + +bool +gfc_check_same_type_as (gfc_expr *a, gfc_expr *b) +{ + if (a->ts.type != BT_DERIVED && a->ts.type != BT_CLASS) + { + gfc_error ("%qs argument of %qs intrinsic at %L " + "cannot be of type %s", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, + &a->where, gfc_typename (a)); + return false; + } + + if (!(gfc_type_is_extensible (a->ts.u.derived) || UNLIMITED_POLY (a))) + { + gfc_error ("%qs argument of %qs intrinsic at %L " + "must be of an extensible type", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &a->where); + return false; + } + + if (b->ts.type != BT_DERIVED && b->ts.type != BT_CLASS) + { + gfc_error ("%qs argument of %qs intrinsic at %L " + "cannot be of type %s", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, + &b->where, gfc_typename (b)); + return false; + } + + if (!(gfc_type_is_extensible (b->ts.u.derived) || UNLIMITED_POLY (b))) + { + gfc_error ("%qs argument of %qs intrinsic at %L " + "must be of an extensible type", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &b->where); + return false; + } + + return true; +} + + +bool +gfc_check_scale (gfc_expr *x, gfc_expr *i) +{ + if (!type_check (x, 0, BT_REAL)) + return false; + + if (!type_check (i, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_scan (gfc_expr *x, gfc_expr *y, gfc_expr *z, gfc_expr *kind) +{ + if (!type_check (x, 0, BT_CHARACTER)) + return false; + + if (!type_check (y, 1, BT_CHARACTER)) + return false; + + if (z != NULL && !type_check (z, 2, BT_LOGICAL)) + return false; + + if (!kind_check (kind, 3, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + if (!same_type_check (x, 0, y, 1)) + return false; + + return true; +} + + +bool +gfc_check_secnds (gfc_expr *r) +{ + if (!type_check (r, 0, BT_REAL)) + return false; + + if (!kind_value_check (r, 0, 4)) + return false; + + if (!scalar_check (r, 0)) + return false; + + return true; +} + + +bool +gfc_check_selected_char_kind (gfc_expr *name) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (!scalar_check (name, 0)) + return false; + + return true; +} + + +bool +gfc_check_selected_int_kind (gfc_expr *r) +{ + if (!type_check (r, 0, BT_INTEGER)) + return false; + + if (!scalar_check (r, 0)) + return false; + + return true; +} + + +bool +gfc_check_selected_real_kind (gfc_expr *p, gfc_expr *r, gfc_expr *radix) +{ + if (p == NULL && r == NULL + && !gfc_notify_std (GFC_STD_F2008, "SELECTED_REAL_KIND with" + " neither %<P%> nor %<R%> argument at %L", + gfc_current_intrinsic_where)) + return false; + + if (p) + { + if (!type_check (p, 0, BT_INTEGER)) + return false; + + if (!scalar_check (p, 0)) + return false; + } + + if (r) + { + if (!type_check (r, 1, BT_INTEGER)) + return false; + + if (!scalar_check (r, 1)) + return false; + } + + if (radix) + { + if (!type_check (radix, 1, BT_INTEGER)) + return false; + + if (!scalar_check (radix, 1)) + return false; + + if (!gfc_notify_std (GFC_STD_F2008, "%qs intrinsic with " + "RADIX argument at %L", gfc_current_intrinsic, + &radix->where)) + return false; + } + + return true; +} + + +bool +gfc_check_set_exponent (gfc_expr *x, gfc_expr *i) +{ + if (!type_check (x, 0, BT_REAL)) + return false; + + if (!type_check (i, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_shape (gfc_expr *source, gfc_expr *kind) +{ + gfc_array_ref *ar; + + if (gfc_invalid_null_arg (source)) + return false; + + if (!kind_check (kind, 1, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + if (source->rank == 0 || source->expr_type != EXPR_VARIABLE) + return true; + + if (source->ref == NULL) + return false; + + ar = gfc_find_array_ref (source); + + if (ar->as && ar->as->type == AS_ASSUMED_SIZE && ar->type == AR_FULL) + { + gfc_error ("%<source%> argument of %<shape%> intrinsic at %L must not be " + "an assumed size array", &source->where); + return false; + } + + return true; +} + + +bool +gfc_check_shift (gfc_expr *i, gfc_expr *shift) +{ + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!type_check (shift, 0, BT_INTEGER)) + return false; + + if (!nonnegative_check ("SHIFT", shift)) + return false; + + if (!less_than_bitsize1 ("I", i, "SHIFT", shift, true)) + return false; + + return true; +} + + +bool +gfc_check_sign (gfc_expr *a, gfc_expr *b) +{ + if (!int_or_real_check (a, 0)) + return false; + + if (!same_type_check (a, 0, b, 1)) + return false; + + return true; +} + + +bool +gfc_check_size (gfc_expr *array, gfc_expr *dim, gfc_expr *kind) +{ + if (!array_check (array, 0)) + return false; + + if (!dim_check (dim, 1, true)) + return false; + + if (!dim_rank_check (dim, array, 0)) + return false; + + if (!kind_check (kind, 2, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + + return true; +} + + +bool +gfc_check_sizeof (gfc_expr *arg) +{ + if (gfc_invalid_null_arg (arg)) + return false; + + if (arg->ts.type == BT_PROCEDURE) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be a procedure", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &arg->where); + return false; + } + + if (illegal_boz_arg (arg)) + return false; + + /* TYPE(*) is acceptable if and only if it uses an array descriptor. */ + if (arg->ts.type == BT_ASSUMED + && (arg->symtree->n.sym->as == NULL + || (arg->symtree->n.sym->as->type != AS_ASSUMED_SHAPE + && arg->symtree->n.sym->as->type != AS_DEFERRED + && arg->symtree->n.sym->as->type != AS_ASSUMED_RANK))) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be TYPE(*)", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &arg->where); + return false; + } + + if (arg->rank && arg->expr_type == EXPR_VARIABLE + && arg->symtree->n.sym->as != NULL + && arg->symtree->n.sym->as->type == AS_ASSUMED_SIZE && arg->ref + && arg->ref->type == REF_ARRAY && arg->ref->u.ar.type == AR_FULL) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be an " + "assumed-size array", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &arg->where); + return false; + } + + return true; +} + + +/* Check whether an expression is interoperable. When returning false, + msg is set to a string telling why the expression is not interoperable, + otherwise, it is set to NULL. The msg string can be used in diagnostics. + If c_loc is true, character with len > 1 are allowed (cf. Fortran + 2003corr5); additionally, assumed-shape/assumed-rank/deferred-shape + arrays are permitted. And if c_f_ptr is true, deferred-shape arrays + are permitted. */ + +static bool +is_c_interoperable (gfc_expr *expr, const char **msg, bool c_loc, bool c_f_ptr) +{ + *msg = NULL; + + if (expr->expr_type == EXPR_NULL) + { + *msg = "NULL() is not interoperable"; + return false; + } + + if (expr->ts.type == BT_BOZ) + { + *msg = "BOZ literal constant"; + return false; + } + + if (expr->ts.type == BT_CLASS) + { + *msg = "Expression is polymorphic"; + return false; + } + + if (expr->ts.type == BT_DERIVED && !expr->ts.u.derived->attr.is_bind_c + && !expr->ts.u.derived->ts.is_iso_c) + { + *msg = "Expression is a noninteroperable derived type"; + return false; + } + + if (expr->ts.type == BT_PROCEDURE) + { + *msg = "Procedure unexpected as argument"; + return false; + } + + if (gfc_notification_std (GFC_STD_GNU) && expr->ts.type == BT_LOGICAL) + { + int i; + for (i = 0; gfc_logical_kinds[i].kind; i++) + if (gfc_logical_kinds[i].kind == expr->ts.kind) + return true; + *msg = "Extension to use a non-C_Bool-kind LOGICAL"; + return false; + } + + if (gfc_notification_std (GFC_STD_GNU) && expr->ts.type == BT_CHARACTER + && expr->ts.kind != 1) + { + *msg = "Extension to use a non-C_CHAR-kind CHARACTER"; + return false; + } + + if (expr->ts.type == BT_CHARACTER) { + if (expr->ts.deferred) + { + /* TS 29113 allows deferred-length strings as dummy arguments, + but it is not an interoperable type. */ + *msg = "Expression shall not be a deferred-length string"; + return false; + } + + if (expr->ts.u.cl && expr->ts.u.cl->length + && !gfc_simplify_expr (expr->ts.u.cl->length, 0)) + gfc_internal_error ("is_c_interoperable(): gfc_simplify_expr failed"); + + if (!c_loc && expr->ts.u.cl + && (!expr->ts.u.cl->length + || expr->ts.u.cl->length->expr_type != EXPR_CONSTANT + || mpz_cmp_si (expr->ts.u.cl->length->value.integer, 1) != 0)) + { + *msg = "Type shall have a character length of 1"; + return false; + } + } + + /* Note: The following checks are about interoperatable variables, Fortran + 15.3.5/15.3.6. In intrinsics like C_LOC or in procedure interface, more + is allowed, e.g. assumed-shape arrays with TS 29113. */ + + if (gfc_is_coarray (expr)) + { + *msg = "Coarrays are not interoperable"; + return false; + } + + if (!c_loc && expr->rank > 0 && expr->expr_type != EXPR_ARRAY) + { + gfc_array_ref *ar = gfc_find_array_ref (expr); + if (ar->type != AR_FULL) + { + *msg = "Only whole-arrays are interoperable"; + return false; + } + if (!c_f_ptr && ar->as->type != AS_EXPLICIT + && ar->as->type != AS_ASSUMED_SIZE) + { + *msg = "Only explicit-size and assumed-size arrays are interoperable"; + return false; + } + } + + return true; +} + + +bool +gfc_check_c_sizeof (gfc_expr *arg) +{ + const char *msg; + + if (!is_c_interoperable (arg, &msg, false, false)) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be an " + "interoperable data entity: %s", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &arg->where, msg); + return false; + } + + if (arg->ts.type == BT_ASSUMED) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be " + "TYPE(*)", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &arg->where); + return false; + } + + if (arg->rank && arg->expr_type == EXPR_VARIABLE + && arg->symtree->n.sym->as != NULL + && arg->symtree->n.sym->as->type == AS_ASSUMED_SIZE && arg->ref + && arg->ref->type == REF_ARRAY && arg->ref->u.ar.type == AR_FULL) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be an " + "assumed-size array", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &arg->where); + return false; + } + + return true; +} + + +bool +gfc_check_c_associated (gfc_expr *c_ptr_1, gfc_expr *c_ptr_2) +{ + if (c_ptr_1->ts.type != BT_DERIVED + || c_ptr_1->ts.u.derived->from_intmod != INTMOD_ISO_C_BINDING + || (c_ptr_1->ts.u.derived->intmod_sym_id != ISOCBINDING_PTR + && c_ptr_1->ts.u.derived->intmod_sym_id != ISOCBINDING_FUNPTR)) + { + gfc_error ("Argument C_PTR_1 at %L to C_ASSOCIATED shall have the " + "type TYPE(C_PTR) or TYPE(C_FUNPTR)", &c_ptr_1->where); + return false; + } + + if (!scalar_check (c_ptr_1, 0)) + return false; + + if (c_ptr_2 + && (c_ptr_2->ts.type != BT_DERIVED + || c_ptr_2->ts.u.derived->from_intmod != INTMOD_ISO_C_BINDING + || (c_ptr_1->ts.u.derived->intmod_sym_id + != c_ptr_2->ts.u.derived->intmod_sym_id))) + { + gfc_error ("Argument C_PTR_2 at %L to C_ASSOCIATED shall have the " + "same type as C_PTR_1: %s instead of %s", &c_ptr_1->where, + gfc_typename (&c_ptr_1->ts), + gfc_typename (&c_ptr_2->ts)); + return false; + } + + if (c_ptr_2 && !scalar_check (c_ptr_2, 1)) + return false; + + return true; +} + + +bool +gfc_check_c_f_pointer (gfc_expr *cptr, gfc_expr *fptr, gfc_expr *shape) +{ + symbol_attribute attr; + const char *msg; + + if (cptr->ts.type != BT_DERIVED + || cptr->ts.u.derived->from_intmod != INTMOD_ISO_C_BINDING + || cptr->ts.u.derived->intmod_sym_id != ISOCBINDING_PTR) + { + gfc_error ("Argument CPTR at %L to C_F_POINTER shall have the " + "type TYPE(C_PTR)", &cptr->where); + return false; + } + + if (!scalar_check (cptr, 0)) + return false; + + attr = gfc_expr_attr (fptr); + + if (!attr.pointer) + { + gfc_error ("Argument FPTR at %L to C_F_POINTER must be a pointer", + &fptr->where); + return false; + } + + if (fptr->ts.type == BT_CLASS) + { + gfc_error ("FPTR argument at %L to C_F_POINTER shall not be polymorphic", + &fptr->where); + return false; + } + + if (gfc_is_coindexed (fptr)) + { + gfc_error ("Argument FPTR at %L to C_F_POINTER shall not be " + "coindexed", &fptr->where); + return false; + } + + if (fptr->rank == 0 && shape) + { + gfc_error ("Unexpected SHAPE argument at %L to C_F_POINTER with scalar " + "FPTR", &fptr->where); + return false; + } + else if (fptr->rank && !shape) + { + gfc_error ("Expected SHAPE argument to C_F_POINTER with array " + "FPTR at %L", &fptr->where); + return false; + } + + if (shape && !rank_check (shape, 2, 1)) + return false; + + if (shape && !type_check (shape, 2, BT_INTEGER)) + return false; + + if (shape) + { + mpz_t size; + if (gfc_array_size (shape, &size)) + { + if (mpz_cmp_ui (size, fptr->rank) != 0) + { + mpz_clear (size); + gfc_error ("SHAPE argument at %L to C_F_POINTER must have the same " + "size as the RANK of FPTR", &shape->where); + return false; + } + mpz_clear (size); + } + } + + if (fptr->ts.type == BT_CLASS) + { + gfc_error ("Polymorphic FPTR at %L to C_F_POINTER", &fptr->where); + return false; + } + + if (fptr->rank > 0 && !is_c_interoperable (fptr, &msg, false, true)) + return gfc_notify_std (GFC_STD_F2018, "Noninteroperable array FPTR " + "at %L to C_F_POINTER: %s", &fptr->where, msg); + + return true; +} + + +bool +gfc_check_c_f_procpointer (gfc_expr *cptr, gfc_expr *fptr) +{ + symbol_attribute attr; + + if (cptr->ts.type != BT_DERIVED + || cptr->ts.u.derived->from_intmod != INTMOD_ISO_C_BINDING + || cptr->ts.u.derived->intmod_sym_id != ISOCBINDING_FUNPTR) + { + gfc_error ("Argument CPTR at %L to C_F_PROCPOINTER shall have the " + "type TYPE(C_FUNPTR)", &cptr->where); + return false; + } + + if (!scalar_check (cptr, 0)) + return false; + + attr = gfc_expr_attr (fptr); + + if (!attr.proc_pointer) + { + gfc_error ("Argument FPTR at %L to C_F_PROCPOINTER shall be a procedure " + "pointer", &fptr->where); + return false; + } + + if (gfc_is_coindexed (fptr)) + { + gfc_error ("Argument FPTR at %L to C_F_PROCPOINTER shall not be " + "coindexed", &fptr->where); + return false; + } + + if (!attr.is_bind_c) + return gfc_notify_std (GFC_STD_F2018, "Noninteroperable procedure " + "pointer at %L to C_F_PROCPOINTER", &fptr->where); + + return true; +} + + +bool +gfc_check_c_funloc (gfc_expr *x) +{ + symbol_attribute attr; + + if (gfc_is_coindexed (x)) + { + gfc_error ("Argument X at %L to C_FUNLOC shall not be " + "coindexed", &x->where); + return false; + } + + attr = gfc_expr_attr (x); + + if (attr.function && !attr.proc_pointer && x->expr_type == EXPR_VARIABLE + && x->symtree->n.sym == x->symtree->n.sym->result) + for (gfc_namespace *ns = gfc_current_ns; ns; ns = ns->parent) + if (x->symtree->n.sym == ns->proc_name) + { + gfc_error ("Function result %qs at %L is invalid as X argument " + "to C_FUNLOC", x->symtree->n.sym->name, &x->where); + return false; + } + + if (attr.flavor != FL_PROCEDURE) + { + gfc_error ("Argument X at %L to C_FUNLOC shall be a procedure " + "or a procedure pointer", &x->where); + return false; + } + + if (!attr.is_bind_c) + return gfc_notify_std (GFC_STD_F2018, "Noninteroperable procedure " + "at %L to C_FUNLOC", &x->where); + return true; +} + + +bool +gfc_check_c_loc (gfc_expr *x) +{ + symbol_attribute attr; + const char *msg; + + if (gfc_is_coindexed (x)) + { + gfc_error ("Argument X at %L to C_LOC shall not be coindexed", &x->where); + return false; + } + + if (x->ts.type == BT_CLASS) + { + gfc_error ("X argument at %L to C_LOC shall not be polymorphic", + &x->where); + return false; + } + + attr = gfc_expr_attr (x); + + if (!attr.pointer + && (x->expr_type != EXPR_VARIABLE || !attr.target + || attr.flavor == FL_PARAMETER)) + { + gfc_error ("Argument X at %L to C_LOC shall have either " + "the POINTER or the TARGET attribute", &x->where); + return false; + } + + if (x->ts.type == BT_CHARACTER + && gfc_var_strlen (x) == 0) + { + gfc_error ("Argument X at %L to C_LOC shall be not be a zero-sized " + "string", &x->where); + return false; + } + + if (!is_c_interoperable (x, &msg, true, false)) + { + if (x->ts.type == BT_CLASS) + { + gfc_error ("Argument at %L to C_LOC shall not be polymorphic", + &x->where); + return false; + } + + if (x->rank + && !gfc_notify_std (GFC_STD_F2018, + "Noninteroperable array at %L as" + " argument to C_LOC: %s", &x->where, msg)) + return false; + } + else if (x->rank > 0 && gfc_notification_std (GFC_STD_F2008)) + { + gfc_array_ref *ar = gfc_find_array_ref (x); + + if (ar->as->type != AS_EXPLICIT && ar->as->type != AS_ASSUMED_SIZE + && !attr.allocatable + && !gfc_notify_std (GFC_STD_F2008, + "Array of interoperable type at %L " + "to C_LOC which is nonallocatable and neither " + "assumed size nor explicit size", &x->where)) + return false; + else if (ar->type != AR_FULL + && !gfc_notify_std (GFC_STD_F2008, "Array section at %L " + "to C_LOC", &x->where)) + return false; + } + + return true; +} + + +bool +gfc_check_sleep_sub (gfc_expr *seconds) +{ + if (!type_check (seconds, 0, BT_INTEGER)) + return false; + + if (!scalar_check (seconds, 0)) + return false; + + return true; +} + +bool +gfc_check_sngl (gfc_expr *a) +{ + if (!type_check (a, 0, BT_REAL)) + return false; + + if ((a->ts.kind != gfc_default_double_kind) + && !gfc_notify_std (GFC_STD_GNU, "non double precision " + "REAL argument to %s intrinsic at %L", + gfc_current_intrinsic, &a->where)) + return false; + + return true; +} + +bool +gfc_check_spread (gfc_expr *source, gfc_expr *dim, gfc_expr *ncopies) +{ + if (gfc_invalid_null_arg (source)) + return false; + + if (source->rank >= GFC_MAX_DIMENSIONS) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be less " + "than rank %d", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &source->where, GFC_MAX_DIMENSIONS); + + return false; + } + + if (dim == NULL) + return false; + + if (!dim_check (dim, 1, false)) + return false; + + /* dim_rank_check() does not apply here. */ + if (dim + && dim->expr_type == EXPR_CONSTANT + && (mpz_cmp_ui (dim->value.integer, 1) < 0 + || mpz_cmp_ui (dim->value.integer, source->rank + 1) > 0)) + { + gfc_error ("%qs argument of %qs intrinsic at %L is not a valid " + "dimension index", gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &dim->where); + return false; + } + + if (!type_check (ncopies, 2, BT_INTEGER)) + return false; + + if (!scalar_check (ncopies, 2)) + return false; + + return true; +} + + +/* Functions for checking FGETC, FPUTC, FGET and FPUT (subroutines and + functions). */ + +bool +arg_strlen_is_zero (gfc_expr *c, int n) +{ + if (gfc_var_strlen (c) == 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L must have " + "length at least 1", gfc_current_intrinsic_arg[n]->name, + gfc_current_intrinsic, &c->where); + return true; + } + return false; +} + +bool +gfc_check_fgetputc_sub (gfc_expr *unit, gfc_expr *c, gfc_expr *status) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (c, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (c, 1, gfc_default_character_kind)) + return false; + if (strcmp (gfc_current_intrinsic, "fgetc") == 0 + && !variable_check (c, 1, false)) + return false; + if (arg_strlen_is_zero (c, 1)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER) + || !kind_value_check (status, 2, gfc_default_integer_kind) + || !scalar_check (status, 2) + || !variable_check (status, 2, false)) + return false; + + return true; +} + + +bool +gfc_check_fgetputc (gfc_expr *unit, gfc_expr *c) +{ + return gfc_check_fgetputc_sub (unit, c, NULL); +} + + +bool +gfc_check_fgetput_sub (gfc_expr *c, gfc_expr *status) +{ + if (!type_check (c, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (c, 0, gfc_default_character_kind)) + return false; + if (strcmp (gfc_current_intrinsic, "fget") == 0 + && !variable_check (c, 0, false)) + return false; + if (arg_strlen_is_zero (c, 0)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 1, BT_INTEGER) + || !kind_value_check (status, 1, gfc_default_integer_kind) + || !scalar_check (status, 1) + || !variable_check (status, 1, false)) + return false; + + return true; +} + + +bool +gfc_check_fgetput (gfc_expr *c) +{ + return gfc_check_fgetput_sub (c, NULL); +} + + +bool +gfc_check_fseek_sub (gfc_expr *unit, gfc_expr *offset, gfc_expr *whence, gfc_expr *status) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (offset, 1, BT_INTEGER)) + return false; + + if (!scalar_check (offset, 1)) + return false; + + if (!type_check (whence, 2, BT_INTEGER)) + return false; + + if (!scalar_check (whence, 2)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 3, BT_INTEGER)) + return false; + + if (!kind_value_check (status, 3, 4)) + return false; + + if (!scalar_check (status, 3)) + return false; + + return true; +} + + + +bool +gfc_check_fstat (gfc_expr *unit, gfc_expr *array) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (array, 1, BT_INTEGER) + || !kind_value_check (unit, 0, gfc_default_integer_kind)) + return false; + + if (!array_check (array, 1)) + return false; + + return true; +} + + +bool +gfc_check_fstat_sub (gfc_expr *unit, gfc_expr *array, gfc_expr *status) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (array, 1, BT_INTEGER) + || !kind_value_check (array, 1, gfc_default_integer_kind)) + return false; + + if (!array_check (array, 1)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER) + || !kind_value_check (status, 2, gfc_default_integer_kind)) + return false; + + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_ftell (gfc_expr *unit) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + return true; +} + + +bool +gfc_check_ftell_sub (gfc_expr *unit, gfc_expr *offset) +{ + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (offset, 1, BT_INTEGER)) + return false; + + if (!scalar_check (offset, 1)) + return false; + + return true; +} + + +bool +gfc_check_stat (gfc_expr *name, gfc_expr *array) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (!type_check (array, 1, BT_INTEGER) + || !kind_value_check (array, 1, gfc_default_integer_kind)) + return false; + + if (!array_check (array, 1)) + return false; + + return true; +} + + +bool +gfc_check_stat_sub (gfc_expr *name, gfc_expr *array, gfc_expr *status) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (!type_check (array, 1, BT_INTEGER) + || !kind_value_check (array, 1, gfc_default_integer_kind)) + return false; + + if (!array_check (array, 1)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER) + || !kind_value_check (array, 1, gfc_default_integer_kind)) + return false; + + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_image_index (gfc_expr *coarray, gfc_expr *sub) +{ + mpz_t nelems; + + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %C, use %<-fcoarray=%> to enable"); + return false; + } + + if (!coarray_check (coarray, 0)) + return false; + + if (sub->rank != 1) + { + gfc_error ("%s argument to IMAGE_INDEX must be a rank one array at %L", + gfc_current_intrinsic_arg[1]->name, &sub->where); + return false; + } + + if (sub->ts.type != BT_INTEGER) + { + gfc_error ("Type of %s argument of IMAGE_INDEX at %L shall be INTEGER", + gfc_current_intrinsic_arg[1]->name, &sub->where); + return false; + } + + if (gfc_array_size (sub, &nelems)) + { + int corank = gfc_get_corank (coarray); + + if (mpz_cmp_ui (nelems, corank) != 0) + { + gfc_error ("The number of array elements of the SUB argument to " + "IMAGE_INDEX at %L shall be %d (corank) not %d", + &sub->where, corank, (int) mpz_get_si (nelems)); + mpz_clear (nelems); + return false; + } + mpz_clear (nelems); + } + + return true; +} + + +bool +gfc_check_num_images (gfc_expr *distance, gfc_expr *failed) +{ + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %C, use %<-fcoarray=%> to enable"); + return false; + } + + if (distance) + { + if (!type_check (distance, 0, BT_INTEGER)) + return false; + + if (!nonnegative_check ("DISTANCE", distance)) + return false; + + if (!scalar_check (distance, 0)) + return false; + + if (!gfc_notify_std (GFC_STD_F2018, "DISTANCE= argument to " + "NUM_IMAGES at %L", &distance->where)) + return false; + } + + if (failed) + { + if (!type_check (failed, 1, BT_LOGICAL)) + return false; + + if (!scalar_check (failed, 1)) + return false; + + if (!gfc_notify_std (GFC_STD_F2018, "FAILED= argument to " + "NUM_IMAGES at %L", &failed->where)) + return false; + } + + return true; +} + + +bool +gfc_check_team_number (gfc_expr *team) +{ + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %C, use %<-fcoarray=%> to enable"); + return false; + } + + if (team) + { + if (team->ts.type != BT_DERIVED + || team->ts.u.derived->from_intmod != INTMOD_ISO_FORTRAN_ENV + || team->ts.u.derived->intmod_sym_id != ISOFORTRAN_TEAM_TYPE) + { + gfc_error ("TEAM argument at %L to the intrinsic TEAM_NUMBER " + "shall be of type TEAM_TYPE", &team->where); + return false; + } + } + else + return true; + + return true; +} + + +bool +gfc_check_this_image (gfc_expr *coarray, gfc_expr *dim, gfc_expr *distance) +{ + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %C, use %<-fcoarray=%> to enable"); + return false; + } + + if (coarray == NULL && dim == NULL && distance == NULL) + return true; + + if (dim != NULL && coarray == NULL) + { + gfc_error ("DIM argument without COARRAY argument not allowed for " + "THIS_IMAGE intrinsic at %L", &dim->where); + return false; + } + + if (distance && (coarray || dim)) + { + gfc_error ("The DISTANCE argument may not be specified together with the " + "COARRAY or DIM argument in intrinsic at %L", + &distance->where); + return false; + } + + /* Assume that we have "this_image (distance)". */ + if (coarray && !gfc_is_coarray (coarray) && coarray->ts.type == BT_INTEGER) + { + if (dim) + { + gfc_error ("Unexpected DIM argument with noncoarray argument at %L", + &coarray->where); + return false; + } + distance = coarray; + } + + if (distance) + { + if (!type_check (distance, 2, BT_INTEGER)) + return false; + + if (!nonnegative_check ("DISTANCE", distance)) + return false; + + if (!scalar_check (distance, 2)) + return false; + + if (!gfc_notify_std (GFC_STD_F2018, "DISTANCE= argument to " + "THIS_IMAGE at %L", &distance->where)) + return false; + + return true; + } + + if (!coarray_check (coarray, 0)) + return false; + + if (dim != NULL) + { + if (!dim_check (dim, 1, false)) + return false; + + if (!dim_corank_check (dim, coarray)) + return false; + } + + return true; +} + +/* Calculate the sizes for transfer, used by gfc_check_transfer and also + by gfc_simplify_transfer. Return false if we cannot do so. */ + +bool +gfc_calculate_transfer_sizes (gfc_expr *source, gfc_expr *mold, gfc_expr *size, + size_t *source_size, size_t *result_size, + size_t *result_length_p) +{ + size_t result_elt_size; + + if (source->expr_type == EXPR_FUNCTION) + return false; + + if (size && size->expr_type != EXPR_CONSTANT) + return false; + + /* Calculate the size of the source. */ + if (!gfc_target_expr_size (source, source_size)) + return false; + + /* Determine the size of the element. */ + if (!gfc_element_size (mold, &result_elt_size)) + return false; + + /* If the storage size of SOURCE is greater than zero and MOLD is an array, + * a scalar with the type and type parameters of MOLD shall not have a + * storage size equal to zero. + * If MOLD is a scalar and SIZE is absent, the result is a scalar. + * If MOLD is an array and SIZE is absent, the result is an array and of + * rank one. Its size is as small as possible such that its physical + * representation is not shorter than that of SOURCE. + * If SIZE is present, the result is an array of rank one and size SIZE. + */ + if (result_elt_size == 0 && *source_size > 0 && !size + && mold->expr_type == EXPR_ARRAY) + { + gfc_error ("%<MOLD%> argument of %<TRANSFER%> intrinsic at %L is an " + "array and shall not have storage size 0 when %<SOURCE%> " + "argument has size greater than 0", &mold->where); + return false; + } + + if (result_elt_size == 0 && *source_size == 0 && !size) + { + *result_size = 0; + if (result_length_p) + *result_length_p = 0; + return true; + } + + if ((result_elt_size > 0 && (mold->expr_type == EXPR_ARRAY || mold->rank)) + || size) + { + int result_length; + + if (size) + result_length = (size_t)mpz_get_ui (size->value.integer); + else + { + result_length = *source_size / result_elt_size; + if (result_length * result_elt_size < *source_size) + result_length += 1; + } + + *result_size = result_length * result_elt_size; + if (result_length_p) + *result_length_p = result_length; + } + else + *result_size = result_elt_size; + + return true; +} + + +bool +gfc_check_transfer (gfc_expr *source, gfc_expr *mold, gfc_expr *size) +{ + size_t source_size; + size_t result_size; + + if (gfc_invalid_null_arg (source)) + return false; + + /* SOURCE shall be a scalar or array of any type. */ + if (source->ts.type == BT_PROCEDURE + && source->symtree->n.sym->attr.subroutine == 1) + { + gfc_error ("%<SOURCE%> argument of %<TRANSFER%> intrinsic at %L " + "must not be a %s", &source->where, + gfc_basic_typename (source->ts.type)); + return false; + } + + if (source->ts.type == BT_BOZ && illegal_boz_arg (source)) + return false; + + if (mold->ts.type == BT_BOZ && illegal_boz_arg (mold)) + return false; + + if (gfc_invalid_null_arg (mold)) + return false; + + /* MOLD shall be a scalar or array of any type. */ + if (mold->ts.type == BT_PROCEDURE + && mold->symtree->n.sym->attr.subroutine == 1) + { + gfc_error ("%<MOLD%> argument of %<TRANSFER%> intrinsic at %L " + "must not be a %s", &mold->where, + gfc_basic_typename (mold->ts.type)); + return false; + } + + if (mold->ts.type == BT_HOLLERITH) + { + gfc_error ("%<MOLD%> argument of %<TRANSFER%> intrinsic at %L must not be" + " %s", &mold->where, gfc_basic_typename (BT_HOLLERITH)); + return false; + } + + /* SIZE (optional) shall be an integer scalar. The corresponding actual + argument shall not be an optional dummy argument. */ + if (size != NULL) + { + if (!type_check (size, 2, BT_INTEGER)) + { + if (size->ts.type == BT_BOZ) + reset_boz (size); + return false; + } + + if (!scalar_check (size, 2)) + return false; + + if (!nonoptional_check (size, 2)) + return false; + } + + if (!warn_surprising) + return true; + + /* If we can't calculate the sizes, we cannot check any more. + Return true for that case. */ + + if (!gfc_calculate_transfer_sizes (source, mold, size, &source_size, + &result_size, NULL)) + return true; + + if (source_size < result_size) + gfc_warning (OPT_Wsurprising, + "Intrinsic TRANSFER at %L has partly undefined result: " + "source size %ld < result size %ld", &source->where, + (long) source_size, (long) result_size); + + return true; +} + + +bool +gfc_check_transpose (gfc_expr *matrix) +{ + if (!rank_check (matrix, 0, 2)) + return false; + + return true; +} + + +bool +gfc_check_ubound (gfc_expr *array, gfc_expr *dim, gfc_expr *kind) +{ + if (!array_check (array, 0)) + return false; + + if (!dim_check (dim, 1, false)) + return false; + + if (!dim_rank_check (dim, array, 0)) + return false; + + if (!kind_check (kind, 2, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + return true; +} + + +bool +gfc_check_ucobound (gfc_expr *coarray, gfc_expr *dim, gfc_expr *kind) +{ + if (flag_coarray == GFC_FCOARRAY_NONE) + { + gfc_fatal_error ("Coarrays disabled at %C, use %<-fcoarray=%> to enable"); + return false; + } + + if (!coarray_check (coarray, 0)) + return false; + + if (dim != NULL) + { + if (!dim_check (dim, 1, false)) + return false; + + if (!dim_corank_check (dim, coarray)) + return false; + } + + if (!kind_check (kind, 2, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_unpack (gfc_expr *vector, gfc_expr *mask, gfc_expr *field) +{ + mpz_t vector_size; + + if (!rank_check (vector, 0, 1)) + return false; + + if (!array_check (mask, 1)) + return false; + + if (!type_check (mask, 1, BT_LOGICAL)) + return false; + + if (!same_type_check (vector, 0, field, 2)) + return false; + + if (mask->expr_type == EXPR_ARRAY + && gfc_array_size (vector, &vector_size)) + { + int mask_true_count = 0; + gfc_constructor *mask_ctor; + mask_ctor = gfc_constructor_first (mask->value.constructor); + while (mask_ctor) + { + if (mask_ctor->expr->expr_type != EXPR_CONSTANT) + { + mask_true_count = 0; + break; + } + + if (mask_ctor->expr->value.logical) + mask_true_count++; + + mask_ctor = gfc_constructor_next (mask_ctor); + } + + if (mpz_get_si (vector_size) < mask_true_count) + { + gfc_error ("%qs argument of %qs intrinsic at %L must " + "provide at least as many elements as there " + "are .TRUE. values in %qs (%ld/%d)", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &vector->where, gfc_current_intrinsic_arg[1]->name, + mpz_get_si (vector_size), mask_true_count); + return false; + } + + mpz_clear (vector_size); + } + + if (mask->rank != field->rank && field->rank != 0) + { + gfc_error ("%qs argument of %qs intrinsic at %L must have " + "the same rank as %qs or be a scalar", + gfc_current_intrinsic_arg[2]->name, gfc_current_intrinsic, + &field->where, gfc_current_intrinsic_arg[1]->name); + return false; + } + + if (mask->rank == field->rank) + { + int i; + for (i = 0; i < field->rank; i++) + if (! identical_dimen_shape (mask, i, field, i)) + { + gfc_error ("%qs and %qs arguments of %qs intrinsic at %L " + "must have identical shape.", + gfc_current_intrinsic_arg[2]->name, + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &field->where); + } + } + + return true; +} + + +bool +gfc_check_verify (gfc_expr *x, gfc_expr *y, gfc_expr *z, gfc_expr *kind) +{ + if (!type_check (x, 0, BT_CHARACTER)) + return false; + + if (!same_type_check (x, 0, y, 1)) + return false; + + if (z != NULL && !type_check (z, 2, BT_LOGICAL)) + return false; + + if (!kind_check (kind, 3, BT_INTEGER)) + return false; + if (kind && !gfc_notify_std (GFC_STD_F2003, "%qs intrinsic " + "with KIND argument at %L", + gfc_current_intrinsic, &kind->where)) + return false; + + return true; +} + + +bool +gfc_check_trim (gfc_expr *x) +{ + if (!type_check (x, 0, BT_CHARACTER)) + return false; + + if (gfc_invalid_null_arg (x)) + return false; + + if (!scalar_check (x, 0)) + return false; + + return true; +} + + +bool +gfc_check_ttynam (gfc_expr *unit) +{ + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + return true; +} + + +/************* Check functions for intrinsic subroutines *************/ + +bool +gfc_check_cpu_time (gfc_expr *time) +{ + if (!scalar_check (time, 0)) + return false; + + if (!type_check (time, 0, BT_REAL)) + return false; + + if (!variable_check (time, 0, false)) + return false; + + return true; +} + + +bool +gfc_check_date_and_time (gfc_expr *date, gfc_expr *time, + gfc_expr *zone, gfc_expr *values) +{ + if (date != NULL) + { + if (!type_check (date, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (date, 0, gfc_default_character_kind)) + return false; + if (!scalar_check (date, 0)) + return false; + if (!variable_check (date, 0, false)) + return false; + } + + if (time != NULL) + { + if (!type_check (time, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (time, 1, gfc_default_character_kind)) + return false; + if (!scalar_check (time, 1)) + return false; + if (!variable_check (time, 1, false)) + return false; + } + + if (zone != NULL) + { + if (!type_check (zone, 2, BT_CHARACTER)) + return false; + if (!kind_value_check (zone, 2, gfc_default_character_kind)) + return false; + if (!scalar_check (zone, 2)) + return false; + if (!variable_check (zone, 2, false)) + return false; + } + + if (values != NULL) + { + if (!type_check (values, 3, BT_INTEGER)) + return false; + if (!array_check (values, 3)) + return false; + if (!rank_check (values, 3, 1)) + return false; + if (!variable_check (values, 3, false)) + return false; + } + + return true; +} + + +bool +gfc_check_mvbits (gfc_expr *from, gfc_expr *frompos, gfc_expr *len, + gfc_expr *to, gfc_expr *topos) +{ + if (!type_check (from, 0, BT_INTEGER)) + return false; + + if (!type_check (frompos, 1, BT_INTEGER)) + return false; + + if (!type_check (len, 2, BT_INTEGER)) + return false; + + if (!same_type_check (from, 0, to, 3)) + return false; + + if (!variable_check (to, 3, false)) + return false; + + if (!type_check (topos, 4, BT_INTEGER)) + return false; + + if (!nonnegative_check ("frompos", frompos)) + return false; + + if (!nonnegative_check ("topos", topos)) + return false; + + if (!nonnegative_check ("len", len)) + return false; + + if (!less_than_bitsize2 ("from", from, "frompos", frompos, "len", len)) + return false; + + if (!less_than_bitsize2 ("to", to, "topos", topos, "len", len)) + return false; + + return true; +} + + +/* Check the arguments for RANDOM_INIT. */ + +bool +gfc_check_random_init (gfc_expr *repeatable, gfc_expr *image_distinct) +{ + if (!type_check (repeatable, 0, BT_LOGICAL)) + return false; + + if (!scalar_check (repeatable, 0)) + return false; + + if (!type_check (image_distinct, 1, BT_LOGICAL)) + return false; + + if (!scalar_check (image_distinct, 1)) + return false; + + return true; +} + + +bool +gfc_check_random_number (gfc_expr *harvest) +{ + if (!type_check (harvest, 0, BT_REAL)) + return false; + + if (!variable_check (harvest, 0, false)) + return false; + + return true; +} + + +bool +gfc_check_random_seed (gfc_expr *size, gfc_expr *put, gfc_expr *get) +{ + unsigned int nargs = 0, seed_size; + locus *where = NULL; + mpz_t put_size, get_size; + + /* Keep the number of bytes in sync with master_state in + libgfortran/intrinsics/random.c. */ + seed_size = 32 / gfc_default_integer_kind; + + if (size != NULL) + { + if (size->expr_type != EXPR_VARIABLE + || !size->symtree->n.sym->attr.optional) + nargs++; + + if (!scalar_check (size, 0)) + return false; + + if (!type_check (size, 0, BT_INTEGER)) + return false; + + if (!variable_check (size, 0, false)) + return false; + + if (!kind_value_check (size, 0, gfc_default_integer_kind)) + return false; + } + + if (put != NULL) + { + if (put->expr_type != EXPR_VARIABLE + || !put->symtree->n.sym->attr.optional) + { + nargs++; + where = &put->where; + } + + if (!array_check (put, 1)) + return false; + + if (!rank_check (put, 1, 1)) + return false; + + if (!type_check (put, 1, BT_INTEGER)) + return false; + + if (!kind_value_check (put, 1, gfc_default_integer_kind)) + return false; + + if (gfc_array_size (put, &put_size) + && mpz_get_ui (put_size) < seed_size) + gfc_error ("Size of %qs argument of %qs intrinsic at %L " + "too small (%i/%i)", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &put->where, (int) mpz_get_ui (put_size), seed_size); + } + + if (get != NULL) + { + if (get->expr_type != EXPR_VARIABLE + || !get->symtree->n.sym->attr.optional) + { + nargs++; + where = &get->where; + } + + if (!array_check (get, 2)) + return false; + + if (!rank_check (get, 2, 1)) + return false; + + if (!type_check (get, 2, BT_INTEGER)) + return false; + + if (!variable_check (get, 2, false)) + return false; + + if (!kind_value_check (get, 2, gfc_default_integer_kind)) + return false; + + if (gfc_array_size (get, &get_size) + && mpz_get_ui (get_size) < seed_size) + gfc_error ("Size of %qs argument of %qs intrinsic at %L " + "too small (%i/%i)", + gfc_current_intrinsic_arg[2]->name, gfc_current_intrinsic, + &get->where, (int) mpz_get_ui (get_size), seed_size); + } + + /* RANDOM_SEED may not have more than one non-optional argument. */ + if (nargs > 1) + gfc_error ("Too many arguments to %s at %L", gfc_current_intrinsic, where); + + return true; +} + +bool +gfc_check_fe_runtime_error (gfc_actual_arglist *a) +{ + gfc_expr *e; + size_t len, i; + int num_percent, nargs; + + e = a->expr; + if (e->expr_type != EXPR_CONSTANT) + return true; + + len = e->value.character.length; + if (e->value.character.string[len-1] != '\0') + gfc_internal_error ("fe_runtime_error string must be null terminated"); + + num_percent = 0; + for (i=0; i<len-1; i++) + if (e->value.character.string[i] == '%') + num_percent ++; + + nargs = 0; + for (; a; a = a->next) + nargs ++; + + if (nargs -1 != num_percent) + gfc_internal_error ("fe_runtime_error: Wrong number of arguments (%d instead of %d)", + nargs, num_percent++); + + return true; +} + +bool +gfc_check_second_sub (gfc_expr *time) +{ + if (!scalar_check (time, 0)) + return false; + + if (!type_check (time, 0, BT_REAL)) + return false; + + if (!kind_value_check (time, 0, 4)) + return false; + + return true; +} + + +/* COUNT and COUNT_MAX of SYSTEM_CLOCK are scalar, default-kind integer + variables in Fortran 95. In Fortran 2003 and later, they can be of any + kind, and COUNT_RATE can be of type real. Note, count, count_rate, and + count_max are all optional arguments */ + +bool +gfc_check_system_clock (gfc_expr *count, gfc_expr *count_rate, + gfc_expr *count_max) +{ + if (count != NULL) + { + if (!scalar_check (count, 0)) + return false; + + if (!type_check (count, 0, BT_INTEGER)) + return false; + + if (count->ts.kind != gfc_default_integer_kind + && !gfc_notify_std (GFC_STD_F2003, "COUNT argument to " + "SYSTEM_CLOCK at %L has non-default kind", + &count->where)) + return false; + + if (!variable_check (count, 0, false)) + return false; + } + + if (count_rate != NULL) + { + if (!scalar_check (count_rate, 1)) + return false; + + if (!variable_check (count_rate, 1, false)) + return false; + + if (count_rate->ts.type == BT_REAL) + { + if (!gfc_notify_std (GFC_STD_F2003, "Real COUNT_RATE argument to " + "SYSTEM_CLOCK at %L", &count_rate->where)) + return false; + } + else + { + if (!type_check (count_rate, 1, BT_INTEGER)) + return false; + + if (count_rate->ts.kind != gfc_default_integer_kind + && !gfc_notify_std (GFC_STD_F2003, "COUNT_RATE argument to " + "SYSTEM_CLOCK at %L has non-default kind", + &count_rate->where)) + return false; + } + + } + + if (count_max != NULL) + { + if (!scalar_check (count_max, 2)) + return false; + + if (!type_check (count_max, 2, BT_INTEGER)) + return false; + + if (count_max->ts.kind != gfc_default_integer_kind + && !gfc_notify_std (GFC_STD_F2003, "COUNT_MAX argument to " + "SYSTEM_CLOCK at %L has non-default kind", + &count_max->where)) + return false; + + if (!variable_check (count_max, 2, false)) + return false; + } + + return true; +} + + +bool +gfc_check_irand (gfc_expr *x) +{ + if (x == NULL) + return true; + + if (!scalar_check (x, 0)) + return false; + + if (!type_check (x, 0, BT_INTEGER)) + return false; + + if (!kind_value_check (x, 0, 4)) + return false; + + return true; +} + + +bool +gfc_check_alarm_sub (gfc_expr *seconds, gfc_expr *handler, gfc_expr *status) +{ + if (!scalar_check (seconds, 0)) + return false; + if (!type_check (seconds, 0, BT_INTEGER)) + return false; + + if (!int_or_proc_check (handler, 1)) + return false; + if (handler->ts.type == BT_INTEGER && !scalar_check (handler, 1)) + return false; + + if (status == NULL) + return true; + + if (!scalar_check (status, 2)) + return false; + if (!type_check (status, 2, BT_INTEGER)) + return false; + if (!kind_value_check (status, 2, gfc_default_integer_kind)) + return false; + + return true; +} + + +bool +gfc_check_rand (gfc_expr *x) +{ + if (x == NULL) + return true; + + if (!scalar_check (x, 0)) + return false; + + if (!type_check (x, 0, BT_INTEGER)) + return false; + + if (!kind_value_check (x, 0, 4)) + return false; + + return true; +} + + +bool +gfc_check_srand (gfc_expr *x) +{ + if (!scalar_check (x, 0)) + return false; + + if (!type_check (x, 0, BT_INTEGER)) + return false; + + if (!kind_value_check (x, 0, 4)) + return false; + + return true; +} + + +bool +gfc_check_ctime_sub (gfc_expr *time, gfc_expr *result) +{ + if (!scalar_check (time, 0)) + return false; + if (!type_check (time, 0, BT_INTEGER)) + return false; + + if (!type_check (result, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (result, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_dtime_etime (gfc_expr *x) +{ + if (!array_check (x, 0)) + return false; + + if (!rank_check (x, 0, 1)) + return false; + + if (!variable_check (x, 0, false)) + return false; + + if (!type_check (x, 0, BT_REAL)) + return false; + + if (!kind_value_check (x, 0, 4)) + return false; + + return true; +} + + +bool +gfc_check_dtime_etime_sub (gfc_expr *values, gfc_expr *time) +{ + if (!array_check (values, 0)) + return false; + + if (!rank_check (values, 0, 1)) + return false; + + if (!variable_check (values, 0, false)) + return false; + + if (!type_check (values, 0, BT_REAL)) + return false; + + if (!kind_value_check (values, 0, 4)) + return false; + + if (!scalar_check (time, 1)) + return false; + + if (!type_check (time, 1, BT_REAL)) + return false; + + if (!kind_value_check (time, 1, 4)) + return false; + + return true; +} + + +bool +gfc_check_fdate_sub (gfc_expr *date) +{ + if (!type_check (date, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (date, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_gerror (gfc_expr *msg) +{ + if (!type_check (msg, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (msg, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_getcwd_sub (gfc_expr *cwd, gfc_expr *status) +{ + if (!type_check (cwd, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (cwd, 0, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!scalar_check (status, 1)) + return false; + + if (!type_check (status, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_getarg (gfc_expr *pos, gfc_expr *value) +{ + if (!type_check (pos, 0, BT_INTEGER)) + return false; + + if (pos->ts.kind > gfc_default_integer_kind) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be of a kind " + "not wider than the default kind (%d)", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &pos->where, gfc_default_integer_kind); + return false; + } + + if (!type_check (value, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (value, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_getlog (gfc_expr *msg) +{ + if (!type_check (msg, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (msg, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_exit (gfc_expr *status) +{ + if (status == NULL) + return true; + + if (!type_check (status, 0, BT_INTEGER)) + return false; + + if (!scalar_check (status, 0)) + return false; + + return true; +} + + +bool +gfc_check_flush (gfc_expr *unit) +{ + if (unit == NULL) + return true; + + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + return true; +} + + +bool +gfc_check_free (gfc_expr *i) +{ + if (!type_check (i, 0, BT_INTEGER)) + return false; + + if (!scalar_check (i, 0)) + return false; + + return true; +} + + +bool +gfc_check_hostnm (gfc_expr *name) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_hostnm_sub (gfc_expr *name, gfc_expr *status) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!scalar_check (status, 1)) + return false; + + if (!type_check (status, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_itime_idate (gfc_expr *values) +{ + if (!array_check (values, 0)) + return false; + + if (!rank_check (values, 0, 1)) + return false; + + if (!variable_check (values, 0, false)) + return false; + + if (!type_check (values, 0, BT_INTEGER)) + return false; + + if (!kind_value_check (values, 0, gfc_default_integer_kind)) + return false; + + return true; +} + + +bool +gfc_check_ltime_gmtime (gfc_expr *time, gfc_expr *values) +{ + if (!type_check (time, 0, BT_INTEGER)) + return false; + + if (!kind_value_check (time, 0, gfc_default_integer_kind)) + return false; + + if (!scalar_check (time, 0)) + return false; + + if (!array_check (values, 1)) + return false; + + if (!rank_check (values, 1, 1)) + return false; + + if (!variable_check (values, 1, false)) + return false; + + if (!type_check (values, 1, BT_INTEGER)) + return false; + + if (!kind_value_check (values, 1, gfc_default_integer_kind)) + return false; + + return true; +} + + +bool +gfc_check_ttynam_sub (gfc_expr *unit, gfc_expr *name) +{ + if (!scalar_check (unit, 0)) + return false; + + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!type_check (name, 1, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 1, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_is_contiguous (gfc_expr *array) +{ + if (array->expr_type == EXPR_NULL) + { + gfc_error ("Actual argument at %L of %qs intrinsic shall be an " + "associated pointer", &array->where, gfc_current_intrinsic); + return false; + } + + if (!array_check (array, 0)) + return false; + + return true; +} + + +bool +gfc_check_isatty (gfc_expr *unit) +{ + if (unit == NULL) + return false; + + if (!type_check (unit, 0, BT_INTEGER)) + return false; + + if (!scalar_check (unit, 0)) + return false; + + return true; +} + + +bool +gfc_check_isnan (gfc_expr *x) +{ + if (!type_check (x, 0, BT_REAL)) + return false; + + return true; +} + + +bool +gfc_check_perror (gfc_expr *string) +{ + if (!type_check (string, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (string, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_umask (gfc_expr *mask) +{ + if (!type_check (mask, 0, BT_INTEGER)) + return false; + + if (!scalar_check (mask, 0)) + return false; + + return true; +} + + +bool +gfc_check_umask_sub (gfc_expr *mask, gfc_expr *old) +{ + if (!type_check (mask, 0, BT_INTEGER)) + return false; + + if (!scalar_check (mask, 0)) + return false; + + if (old == NULL) + return true; + + if (!scalar_check (old, 1)) + return false; + + if (!type_check (old, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_unlink (gfc_expr *name) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + return true; +} + + +bool +gfc_check_unlink_sub (gfc_expr *name, gfc_expr *status) +{ + if (!type_check (name, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (name, 0, gfc_default_character_kind)) + return false; + + if (status == NULL) + return true; + + if (!scalar_check (status, 1)) + return false; + + if (!type_check (status, 1, BT_INTEGER)) + return false; + + return true; +} + + +bool +gfc_check_signal (gfc_expr *number, gfc_expr *handler) +{ + if (!scalar_check (number, 0)) + return false; + if (!type_check (number, 0, BT_INTEGER)) + return false; + + if (!int_or_proc_check (handler, 1)) + return false; + if (handler->ts.type == BT_INTEGER && !scalar_check (handler, 1)) + return false; + + return true; +} + + +bool +gfc_check_signal_sub (gfc_expr *number, gfc_expr *handler, gfc_expr *status) +{ + if (!scalar_check (number, 0)) + return false; + if (!type_check (number, 0, BT_INTEGER)) + return false; + + if (!int_or_proc_check (handler, 1)) + return false; + if (handler->ts.type == BT_INTEGER && !scalar_check (handler, 1)) + return false; + + if (status == NULL) + return true; + + if (!type_check (status, 2, BT_INTEGER)) + return false; + if (!scalar_check (status, 2)) + return false; + + return true; +} + + +bool +gfc_check_system_sub (gfc_expr *cmd, gfc_expr *status) +{ + if (!type_check (cmd, 0, BT_CHARACTER)) + return false; + if (!kind_value_check (cmd, 0, gfc_default_character_kind)) + return false; + + if (!scalar_check (status, 1)) + return false; + + if (!type_check (status, 1, BT_INTEGER)) + return false; + + if (!kind_value_check (status, 1, gfc_default_integer_kind)) + return false; + + return true; +} + + +/* This is used for the GNU intrinsics AND, OR and XOR. */ +bool +gfc_check_and (gfc_expr *i, gfc_expr *j) +{ + if (i->ts.type != BT_INTEGER + && i->ts.type != BT_LOGICAL + && i->ts.type != BT_BOZ) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER, " + "LOGICAL, or a BOZ literal constant", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &i->where); + return false; + } + + if (j->ts.type != BT_INTEGER + && j->ts.type != BT_LOGICAL + && j->ts.type != BT_BOZ) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER, " + "LOGICAL, or a BOZ literal constant", + gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &j->where); + return false; + } + + /* i and j cannot both be BOZ literal constants. */ + if (!boz_args_check (i, j)) + return false; + + /* If i is BOZ and j is integer, convert i to type of j. */ + if (i->ts.type == BT_BOZ) + { + if (j->ts.type != BT_INTEGER) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER", + gfc_current_intrinsic_arg[1]->name, + gfc_current_intrinsic, &j->where); + reset_boz (i); + return false; + } + if (!gfc_boz2int (i, j->ts.kind)) + return false; + } + + /* If j is BOZ and i is integer, convert j to type of i. */ + if (j->ts.type == BT_BOZ) + { + if (i->ts.type != BT_INTEGER) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be INTEGER", + gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &j->where); + reset_boz (j); + return false; + } + if (!gfc_boz2int (j, i->ts.kind)) + return false; + } + + if (!same_type_check (i, 0, j, 1, false)) + return false; + + if (!scalar_check (i, 0)) + return false; + + if (!scalar_check (j, 1)) + return false; + + return true; +} + + +bool +gfc_check_storage_size (gfc_expr *a, gfc_expr *kind) +{ + + if (a->expr_type == EXPR_NULL) + { + gfc_error ("Intrinsic function NULL at %L cannot be an actual " + "argument to STORAGE_SIZE, because it returns a " + "disassociated pointer", &a->where); + return false; + } + + if (a->ts.type == BT_ASSUMED) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be TYPE(*)", + gfc_current_intrinsic_arg[0]->name, gfc_current_intrinsic, + &a->where); + return false; + } + + if (a->ts.type == BT_PROCEDURE) + { + gfc_error ("%qs argument of %qs intrinsic at %L shall not be a " + "procedure", gfc_current_intrinsic_arg[0]->name, + gfc_current_intrinsic, &a->where); + return false; + } + + if (a->ts.type == BT_BOZ && illegal_boz_arg (a)) + return false; + + if (kind == NULL) + return true; + + if (!type_check (kind, 1, BT_INTEGER)) + return false; + + if (!scalar_check (kind, 1)) + return false; + + if (kind->expr_type != EXPR_CONSTANT) + { + gfc_error ("%qs argument of %qs intrinsic at %L must be a constant", + gfc_current_intrinsic_arg[1]->name, gfc_current_intrinsic, + &kind->where); + return false; + } + + return true; +} |