From c15bb9afe26bbd5e21d6fe69261f16cf805fc5a6 Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Thu, 29 Aug 2024 16:59:14 +0300
Subject: [PATCH] Restore error message incorrectly removed by commit 10d43c4
 (related to GH-15497)

---
 ext/opcache/zend_shared_alloc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ext/opcache/zend_shared_alloc.c b/ext/opcache/zend_shared_alloc.c
index 6354c2e15ea..20854adcaaf 100644
--- a/ext/opcache/zend_shared_alloc.c
+++ b/ext/opcache/zend_shared_alloc.c
@@ -366,6 +366,11 @@ void *zend_shared_alloc(size_t size)
 		zend_accel_error_noreturn(ACCEL_LOG_ERROR, "Possible integer overflow in shared memory allocation (%zu + %zu)", size, PLATFORM_ALIGNMENT);
 	}
 
+#if 1
+	if (!ZCG(locked)) {
+		zend_accel_error_noreturn(ACCEL_LOG_ERROR, "Shared memory lock not obtained");
+	}
+#endif
 	if (block_size > ZSMMG(shared_free)) { /* No hope to find a big-enough block */
 		SHARED_ALLOC_FAILED();
 		return NULL;