From 3be34c0b1dec1272dfabec1e94a4666e9499fdc1 Mon Sep 17 00:00:00 2001 From: Thomas Koenig Date: Mon, 29 Jan 2018 07:11:16 +0000 Subject: re PR fortran/84073 (In -fc-prototypes fixed (nonzero) length strings are mapped to plain char in prototype.) 2017-01-29 Thomas Koenig PR fortran/84073 * resolve.c (resolve_component): Ensure BIND(C) character components have length one. (resolve_symbol): Likewise for variables. 2017-01-29 Thomas Koenig PR fortran/84073 * gfortran.dg/bind_c_usage_31.f90: New test. From-SVN: r257138 --- gcc/fortran/ChangeLog | 7 +++++++ gcc/fortran/resolve.c | 20 ++++++++++++++++++++ 2 files changed, 27 insertions(+) (limited to 'gcc/fortran') diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog index 8660530..96e6fb2 100644 --- a/gcc/fortran/ChangeLog +++ b/gcc/fortran/ChangeLog @@ -1,3 +1,10 @@ +2017-01-29 Thomas Koenig + + PR fortran/84073 + * resolve.c (resolve_component): Ensure BIND(C) character + components have length one. + (resolve_symbol): Likewise for variables. + 2018-01-27 Jakub Jelinek PR fortran/84065 diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c index 8078005..9c8ba86 100644 --- a/gcc/fortran/resolve.c +++ b/gcc/fortran/resolve.c @@ -13557,6 +13557,17 @@ resolve_component (gfc_component *c, gfc_symbol *sym) return false; } + /* F2003, 15.2.1 - length has to be one. */ + if (sym->attr.is_bind_c && c->ts.type == BT_CHARACTER + && (c->ts.u.cl == NULL || c->ts.u.cl->length == NULL + || !gfc_is_constant_expr (c->ts.u.cl->length) + || mpz_cmp_si (c->ts.u.cl->length->value.integer, 1) != 0)) + { + gfc_error ("Component %qs of BIND(C) type at %L must have length one", + c->name, &c->loc); + return false; + } + if (c->attr.proc_pointer && c->ts.interface) { gfc_symbol *ifc = c->ts.interface; @@ -14804,6 +14815,15 @@ resolve_symbol (gfc_symbol *sym) "module level scope", sym->name, &(sym->declared_at)); t = false; } + else if (sym->ts.type == BT_CHARACTER + && (sym->ts.u.cl == NULL || sym->ts.u.cl->length == NULL + || !gfc_is_constant_expr (sym->ts.u.cl->length) + || mpz_cmp_si (sym->ts.u.cl->length->value.integer, 1) != 0)) + { + gfc_error ("BIND(C) Variable %qs at %L must have length one", + sym->name, &sym->declared_at); + t = false; + } else if (sym->common_head != NULL && sym->attr.implicit_type == 0) { t = verify_com_block_vars_c_interop (sym->common_head); -- cgit v1.1