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Subject: [Bug c/46155] Bug with generation of float.h header file on AIX
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46155

--- Comment #11 from Kalle Olavi Niemitalo <kon at iki dot fi> 2010-10-24 19:47:27 UTC ---
(In reply to comment #7)
> In your opinion, are IBM wrong to define fprnd_t in /usr/include/float.h?

IBM's definition of fprnd_t in <float.h> is within #ifdef _ALL_SOURCE.  I
presume _ALL_SOURCE is not defined when IBM's compiler is used in ISO C
conforming mode.  AFAIK, adding non-standard definitions to standard header
files in non-conforming modes is a common practice.

The <float.h> that GCC installed on AIX is identical to gcc/ginclude/float.h in
the GCC 4.2.4 sources.  I can understand if GCC developers don't want to
introduce OS-specific sections in it.