https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57496
Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |burnus at gcc dot gnu.org,
| |fxcoudert at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |fxcoudert at gcc dot
gnu.org
--- Comment #6 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
On x86_64-apple-darwin14, I can confirm this occurs on 5.2.0 but appears to
have been fixed on trunk.
Also, I don't understand how Tobias' patch worked, because in libgfortran.h we
have for a long time redefined all the type-generic floating-point macros in
terms of "safe to use" GCC builtins:
/* The C99 classification macros isfinite, isinf, isnan, isnormal
and signbit are broken or inconsistent on quite a few targets.
So, we use GCC's builtins instead.
Another advantage for GCC's builtins for these type-generic macros
is that it handles floating-point types that the system headers
may not support (like __float128). */
#undef isnan
#define isnan(x) __builtin_isnan(x)
#undef isfinite
#define isfinite(x) __builtin_isfinite(x)
#undef isinf
#define isinf(x) __builtin_isinf(x)
#undef isnormal
#define isnormal(x) __builtin_isnormal(x)
#undef signbit
#define signbit(x) __builtin_signbit(x)
