From a20d9fe5396585b6448aa13c5f6cf8d111b7b7f5 Mon Sep 17 00:00:00 2001
From: Baruch Siach <baruch@tkos.co.il>
Date: Wed, 2 Oct 2013 16:14:55 +0300
Subject: xtensa: fix atomic_decrement_if_positive() return value
atomic_decrement_if_positive() returns the old value of &mem, not the
(sometimes undefined) value of __tmp.
Fixes the uClibc nptl/tst-sem3 test.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
libc/sysdeps/linux/xtensa/bits/atomic.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'libc')
diff --git a/libc/sysdeps/linux/xtensa/bits/atomic.h b/libc/sysdeps/linux/xtensa/bits/atomic.h
index a31841a4b..b2be547f0 100644
--- a/libc/sysdeps/linux/xtensa/bits/atomic.h
+++ b/libc/sysdeps/linux/xtensa/bits/atomic.h
@@ -154,7 +154,7 @@ typedef uintmax_t uatomic_max_t;
: "=&a" (__value), "=&a" (__tmp) \
: "a" (mem) \
: "memory" ); \
- __tmp; \
+ __value; \
})
--
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