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| author | Joseph Myers <joseph@codesourcery.com> | 2016-10-04 16:17:59 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-10-04 16:17:59 +0000 |
| commit | ff88ee7edfaa439e23c42fccaf3a36cd5f041894 (patch) | |
| tree | 1cdc914ae751fd393ae5f1084ab984383829fdf8 /include/limits.h | |
| parent | 22938c4103a4b0b6e8d4b3d50a1c41e3f27dd73e (diff) | |
| download | glibc-ff88ee7edfaa439e23c42fccaf3a36cd5f041894.zip glibc-ff88ee7edfaa439e23c42fccaf3a36cd5f041894.tar.gz glibc-ff88ee7edfaa439e23c42fccaf3a36cd5f041894.tar.bz2 | |
Fix LONG_WIDTH, ULONG_WIDTH include ordering issue.
As described in
<https://sourceware.org/ml/libc-alpha/2016-10/msg00047.html>, there is
an include ordering issue with the integer width macros in glibc's
<limits.h>, where definitions conditional on LONG_MAX do not work as
intended because when the headers are installed, this part of glibc's
<limits.h> is processed before the part of GCC's <limits.h> that will
define LONG_MAX. This patch changes the definitions just to use
__WORDSIZE for the expansion of LONG_WIDTH and ULONG_WIDTH rather than
making those definitions conditional on LONG_MAX.
Tested for x86_64 and x86.
* include/limits.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (LONG_WIDTH):
Define to __WORDSIZE, not conditional on [LONG_MAX ==
0x7fffffffL].
[__GLIBC_USE (IEC_60559_BFP_EXT)] (ULONG_WIDTH): Likewise.
Diffstat (limited to 'include/limits.h')
| -rw-r--r-- | include/limits.h | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/include/limits.h b/include/limits.h index 93cac49..dd601d5 100644 --- a/include/limits.h +++ b/include/limits.h @@ -164,20 +164,11 @@ # ifndef UINT_WIDTH # define UINT_WIDTH 32 # endif -# if LONG_MAX == 0x7fffffffL -# ifndef LONG_WIDTH -# define LONG_WIDTH 32 -# endif -# ifndef ULONG_WIDTH -# define ULONG_WIDTH 32 -# endif -# else -# ifndef LONG_WIDTH -# define LONG_WIDTH 64 -# endif -# ifndef ULONG_WIDTH -# define ULONG_WIDTH 64 -# endif +# ifndef LONG_WIDTH +# define LONG_WIDTH __WORDSIZE +# endif +# ifndef ULONG_WIDTH +# define ULONG_WIDTH __WORDSIZE # endif # ifndef LLONG_WIDTH # define LLONG_WIDTH 64 |