Make LOCK_PRINT & PROCLOCK_PRINT expand to ((void) 0) when not in use.

This avoids warnings from more-anal-than-average compilers, and might
prevent hidden syntax problems in the future.

Andres Freund

diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c
index f4f32e946bd53ace27e2c088eee2dcf11cf95bec..f8dc951009c25d236be8cd37605ef60321e811bd 100644 (file)
--- a/src/backend/storage/lmgr/lock.c
+++ b/src/backend/storage/lmgr/lock.c
@@ -331,8 +331,8 @@ PROCLOCK_PRINT(const char *where, const PROCLOCK *proclockP)
 }
 #else                          /* not LOCK_DEBUG */
 
-#define LOCK_PRINT(where, lock, type)
-#define PROCLOCK_PRINT(where, proclockP)
+#define LOCK_PRINT(where, lock, type)  ((void) 0)
+#define PROCLOCK_PRINT(where, proclockP)  ((void) 0)
 #endif   /* not LOCK_DEBUG */