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-rw-r--r--src/include/storage/lwlock.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/storage/lwlock.h b/src/include/storage/lwlock.h
index a494cb598f..dd818e16ab 100644
--- a/src/include/storage/lwlock.h
+++ b/src/include/storage/lwlock.h
@@ -59,6 +59,9 @@ typedef struct LWLock
*/
#define LWLOCK_PADDED_SIZE PG_CACHE_LINE_SIZE
+StaticAssertDecl(sizeof(LWLock) <= LWLOCK_PADDED_SIZE,
+ "Miscalculated LWLock padding");
+
/* LWLock, padded to a full cache line size */
typedef union LWLockPadded
{