about summary refs log tree commit diff
path: root/nptl/sysdeps
diff options
context:
space:
mode:
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 /nptl/sysdeps
parentca3d773e19effd28cab7720921d1b08781805cf4 (diff)
downloadglibc-04454efba24f352eee6dca7442166dade5000392.tar.gz
glibc-04454efba24f352eee6dca7442166dade5000392.tar.xz
glibc-04454efba24f352eee6dca7442166dade5000392.zip
(AIO_MISC_WAIT): Work around gcc being to clever and reloading the futex value where it shouldn't.
Diffstat (limited to 'nptl/sysdeps')
-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 5aeb34eb98..f285083883 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);						      \
 									      \