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Fix Wundef warning for __STDC_VERSION__

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c4c4124473 added the _Noreturn macro for
pre-C11 compilers, but it now throws a new Wundef warning during `make
check` for __STDC_VERSION__ which gcc does not define by default.  The
following patch fixes this in line with other uses of __STDC_VERSION__
in the file.
This commit is contained in:
Siddhesh Poyarekar 2014-07-03 01:32:17 +05:30
parent 05fdac772b
commit d12704c78f
2 changed files with 8 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2014-07-02 Roland McGrath <roland@hack.frob.com>
* misc/sys/cdefs.h: Check if __STDC_VERSION__ is defined
before checking its value.
2014-07-02 Siddhesh Poyarekar <siddhesh@redhat.com>
* intl/loadmsgcat.c (_nl_load_domain): Use __builtin_expect.

4
misc/sys/cdefs.h
View File

@ -382,7 +382,9 @@
# define __glibc_likely(cond) (cond)
#endif
#if !defined _Noreturn && __STDC_VERSION__ < 201112 && !__GNUC_PREREQ (4,7)
#if (!defined _Noreturn \
&& (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
&& !__GNUC_PREREQ (4,7))
# if __GNUC_PREREQ (2,8)
# define _Noreturn __attribute__ ((__noreturn__))
# else