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configure: use valid args testing sem_timedwait 

The sem_timedwait function has been annotated as requiring
non-null args in latest header files from GCC snapshot
representing the future 2.30 release.

This causes configure to fail when -Werror is used:

config-temp/qemu-conf.c: In function ‘main’:
config-temp/qemu-conf.c:2:25: error: null argument where non-null required (argument 1) [-Werror=nonnull]
    2 | int main(void) { return sem_timedwait(0, 0); }
      |                         ^~~~~~~~~~~~~
config-temp/qemu-conf.c:2:25: error: null argument where non-null required (argument 2) [-Werror=nonnull]

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190617114114.24897-1-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Daniel P. Berrangé 2019-06-17 12:41:14 +01:00 committed by Laurent Vivier
parent 4ace32e227
commit 811294b796
1 changed files with 1 additions and 1 deletions
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2
configure vendored
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@ -5144,7 +5144,7 @@ fi
sem_timedwait=no
cat > $TMPC << EOF
#include <semaphore.h>
int main(void) { return sem_timedwait(0, 0); }
int main(void) { sem_t s; struct timespec t = {0}; return sem_timedwait(&s, &t); }
EOF
if compile_prog "" "" ; then
sem_timedwait=yes