diff options
Diffstat (limited to 'gcc/c-lex.c')
| -rw-r--r-- | gcc/c-lex.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/c-lex.c b/gcc/c-lex.c index df63548..fc89279 100644 --- a/gcc/c-lex.c +++ b/gcc/c-lex.c @@ -617,11 +617,21 @@ interpret_float (const cpp_token *token, unsigned int flags) char *copy; size_t copylen; - /* Default (no suffix) is double. */ + /* Default (no suffix) depends on whether the FLOAT_CONST_DECIMAL64 + pragma has been used and is either double or _Decimal64. Types + that are not allowed with decimal float default to double. */ if (flags & CPP_N_DEFAULT) { flags ^= CPP_N_DEFAULT; flags |= CPP_N_MEDIUM; + + if (((flags & CPP_N_HEX) == 0) && ((flags & CPP_N_IMAGINARY) == 0)) + { + warning (OPT_Wunsuffixed_float_constants, + "unsuffixed float constant"); + if (float_const_decimal64_p ()) + flags |= CPP_N_DFLOAT; + } } /* Decode _Fract and _Accum. */ |