uatomic: fix i386 support

[urcu.git] / compat_arch_x86.c

diff --git a/compat_arch_x86.c b/compat_arch_x86.c
index 9cbd3c8c808d794ac5ad63292479b67e99a96ed4..e882a4afe467f511832b4d4e662225b7fd41ca3a 100644 (file)
--- a/compat_arch_x86.c
+++ b/compat_arch_x86.c
@@ -152,6 +152,7 @@ unsigned long _compat_uatomic_xchg(void *addr, unsigned long _new, int len)
                 * generate an illegal instruction. Cannot catch this with
                 * linker tricks when optimizations are disabled.
                 */
+               retval = 0;     /* silence gcc warnings */
                __asm__ __volatile__("ud2");
        }
        mutex_lock_signal_restore(&compat_mutex, &mask);
@@ -195,6 +196,7 @@ unsigned long _compat_uatomic_cmpxchg(void *addr, unsigned long old,
                 * generate an illegal instruction. Cannot catch this with
                 * linker tricks when optimizations are disabled.
                 */
+               retval = 0;     /* silence gcc warnings */
                __asm__ __volatile__("ud2");
        }
        mutex_lock_signal_restore(&compat_mutex, &mask);
@@ -275,6 +277,7 @@ unsigned long _compat_uatomic_add_return(void *addr, unsigned long v, int len)
                 * generate an illegal instruction. Cannot catch this with
                 * linker tricks when optimizations are disabled.
                 */
+               result = 0;     /* silence gcc warnings */
                __asm__ __volatile__("ud2");
        }
        mutex_lock_signal_restore(&compat_mutex, &mask);