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-rw-r--r--builtin-pack-objects.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index b126fc8e7..a15906bdb 100644
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -1311,12 +1311,12 @@ static pthread_mutex_t progress_mutex = PTHREAD_MUTEX_INITIALIZER;
#else
-#define read_lock() 0
-#define read_unlock() 0
-#define cache_lock() 0
-#define cache_unlock() 0
-#define progress_lock() 0
-#define progress_unlock() 0
+#define read_lock() (void)0
+#define read_unlock() (void)0
+#define cache_lock() (void)0
+#define cache_unlock() (void)0
+#define progress_lock() (void)0
+#define progress_unlock() (void)0
#endif