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authorUlrich Drepper <drepper@redhat.com>2006-01-08 01:51:18 +0000
committerUlrich Drepper <drepper@redhat.com>2006-01-08 01:51:18 +0000
commit04454efba24f352eee6dca7442166dade5000392 (patch)
tree5008ff963b447d24c16c492a74a886fc949fa556
parentca3d773e19effd28cab7720921d1b08781805cf4 (diff)
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(AIO_MISC_WAIT): Work around gcc being to clever and reloading the futex value where it shouldn't.
-rw-r--r--nptl/sysdeps/pthread/aio_misc.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/nptl/sysdeps/pthread/aio_misc.h b/nptl/sysdeps/pthread/aio_misc.h
index 5aeb34e..f285083 100644
--- a/nptl/sysdeps/pthread/aio_misc.h
+++ b/nptl/sysdeps/pthread/aio_misc.h
@@ -35,6 +35,7 @@
#define AIO_MISC_WAIT(result, futex, timeout, cancel) \
do { \
+ volatile int *futexaddr = &futex; \
int oldval = futex; \
\
if (oldval != 0) \
@@ -48,11 +49,11 @@
int status; \
do \
{ \
- status = lll_futex_timed_wait (&futex, oldval, timeout); \
+ status = lll_futex_timed_wait (futexaddr, oldval, timeout); \
if (status != -EWOULDBLOCK) \
break; \
\
- oldval = futex; \
+ oldval = *futexaddr; \
} \
while (oldval != 0); \
\