diff --git a/src/common/classes/alloc.cpp b/src/common/classes/alloc.cpp
index 59e41b18e9..2f73683236 100644
--- a/src/common/classes/alloc.cpp
+++ b/src/common/classes/alloc.cpp
@@ -2963,4 +2963,15 @@ void* operator new[](size_t s) FB_THROW (OOM_EXCEPTION)
 {
 	return MemoryPool::globalAlloc(s ALLOC_ARGS);
 }
+
+void operator delete(void* mem) FB_NOTHROW
+{
+	MemoryPool::globalFree(mem);
+}
+
+void operator delete[](void* mem) FB_NOTHROW
+{
+	MemoryPool::globalFree(mem);
+}
+
 #endif // DEBUG_GDS_ALLOC
diff --git a/src/common/classes/alloc.h b/src/common/classes/alloc.h
index 845a87e826..1bd23a58d0 100644
--- a/src/common/classes/alloc.h
+++ b/src/common/classes/alloc.h
@@ -396,23 +396,8 @@ inline void operator delete[](void* mem, std::size_t s ALLOC_PARAMS) FB_NOTHROW
 
 #ifdef DEBUG_GDS_ALLOC
 
-#ifdef __clang__
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Winline-new-delete"
-#endif
-
-inline void operator delete(void* mem) FB_NOTHROW
-{
-	MemoryPool::globalFree(mem);
-}
-inline void operator delete[](void* mem) FB_NOTHROW
-{
-	MemoryPool::globalFree(mem);
-}
-
-#ifdef __clang__
-#pragma clang diagnostic pop
-#endif
+extern void operator delete(void* mem) FB_NOTHROW;
+extern void operator delete[](void* mem) FB_NOTHROW;
 
 #endif // DEBUG_GDS_ALLOC