diff options
Diffstat (limited to 'gdb/p-exp.y')
| -rw-r--r-- | gdb/p-exp.y | 95 |
1 files changed, 29 insertions, 66 deletions
diff --git a/gdb/p-exp.y b/gdb/p-exp.y index 7c88df6..2df41b8 100644 --- a/gdb/p-exp.y +++ b/gdb/p-exp.y @@ -804,7 +804,6 @@ parse_number (struct parser_state *par_state, { ULONGEST n = 0; ULONGEST prevn = 0; - ULONGEST un; int i = 0; int c; @@ -817,10 +816,6 @@ parse_number (struct parser_state *par_state, /* We have found a "L" or "U" suffix. */ int found_suffix = 0; - ULONGEST high_bit; - struct type *signed_type; - struct type *unsigned_type; - if (parsed_float) { /* Handle suffixes: 'f' for float, 'l' for long double. @@ -919,18 +914,12 @@ parse_number (struct parser_state *par_state, if (i >= base) return ERROR; /* Invalid digit in this base. */ - /* Portably test for overflow (only works for nonzero values, so make - a second check for zero). FIXME: Can't we just make n and prevn - unsigned and avoid this? */ - if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) - unsigned_p = 1; /* Try something unsigned. */ - - /* Portably test for unsigned overflow. - FIXME: This check is wrong; for example it doesn't find overflow - on 0x123456789 when LONGEST is 32 bits. */ - if (c != 'l' && c != 'u' && n != 0) + if (c != 'l' && c != 'u') { - if (unsigned_p && prevn >= n) + /* Test for overflow. */ + if (prevn == 0 && n == 0) + ; + else if (prevn >= n) error (_("Numeric constant too large.")); } prevn = n; @@ -948,57 +937,31 @@ parse_number (struct parser_state *par_state, the case where it is we just always shift the value more than once, with fewer bits each time. */ - un = n >> 2; - if (long_p == 0 - && (un >> (gdbarch_int_bit (par_state->gdbarch ()) - 2)) == 0) - { - high_bit - = ((ULONGEST)1) << (gdbarch_int_bit (par_state->gdbarch ()) - 1); - - /* A large decimal (not hex or octal) constant (between INT_MAX - and UINT_MAX) is a long or unsigned long, according to ANSI, - never an unsigned int, but this code treats it as unsigned - int. This probably should be fixed. GCC gives a warning on - such constants. */ - - unsigned_type = parse_type (par_state)->builtin_unsigned_int; - signed_type = parse_type (par_state)->builtin_int; - } - else if (long_p <= 1 - && (un >> (gdbarch_long_bit (par_state->gdbarch ()) - 2)) == 0) - { - high_bit - = ((ULONGEST)1) << (gdbarch_long_bit (par_state->gdbarch ()) - 1); - unsigned_type = parse_type (par_state)->builtin_unsigned_long; - signed_type = parse_type (par_state)->builtin_long; - } + int int_bits = gdbarch_int_bit (par_state->gdbarch ()); + int long_bits = gdbarch_long_bit (par_state->gdbarch ()); + int long_long_bits = gdbarch_long_long_bit (par_state->gdbarch ()); + bool have_signed = !unsigned_p; + bool have_int = long_p == 0; + bool have_long = long_p <= 1; + if (have_int && have_signed && fits_in_type (1, n, int_bits, true)) + putithere->typed_val_int.type = parse_type (par_state)->builtin_int; + else if (have_int && fits_in_type (1, n, int_bits, false)) + putithere->typed_val_int.type + = parse_type (par_state)->builtin_unsigned_int; + else if (have_long && have_signed && fits_in_type (1, n, long_bits, true)) + putithere->typed_val_int.type = parse_type (par_state)->builtin_long; + else if (have_long && fits_in_type (1, n, long_bits, false)) + putithere->typed_val_int.type + = parse_type (par_state)->builtin_unsigned_long; + else if (have_signed && fits_in_type (1, n, long_long_bits, true)) + putithere->typed_val_int.type + = parse_type (par_state)->builtin_long_long; + else if (fits_in_type (1, n, long_long_bits, false)) + putithere->typed_val_int.type + = parse_type (par_state)->builtin_unsigned_long_long; else - { - int shift; - if (sizeof (ULONGEST) * HOST_CHAR_BIT - < gdbarch_long_long_bit (par_state->gdbarch ())) - /* A long long does not fit in a LONGEST. */ - shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); - else - shift = (gdbarch_long_long_bit (par_state->gdbarch ()) - 1); - high_bit = (ULONGEST) 1 << shift; - unsigned_type = parse_type (par_state)->builtin_unsigned_long_long; - signed_type = parse_type (par_state)->builtin_long_long; - } - - putithere->typed_val_int.val = n; - - /* If the high bit of the worked out type is set then this number - has to be unsigned. */ - - if (unsigned_p || (n & high_bit)) - { - putithere->typed_val_int.type = unsigned_type; - } - else - { - putithere->typed_val_int.type = signed_type; - } + error (_("Numeric constant too large.")); + putithere->typed_val_int.val = n; return INT; } |