Suppress use-after-free warning by gcc-12

nobu · nobu · commit 5d5c1d0fbdf1 · 2022-07-28T09:06:42.000+09:00
diff --git a/gc.c b/gc.c
@@ -12368,6 +12368,7 @@ objspace_xfree(rb_objspace_t *objspace, void *ptr, size_t old_size)
 
     objspace_malloc_increase(objspace, ptr, 0, old_size, MEMOP_TYPE_FREE) {
         free(ptr);
+        ptr = NULL;
         RB_DEBUG_COUNTER_INC(heap_xfree);
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -12368,6 +12368,7 @@ objspace_xfree(rb_objspace_t objspace, void ptr, size_t old_size)`
`12368`	`12368`
`12369`	`12369`	`objspace_malloc_increase(objspace, ptr, 0, old_size, MEMOP_TYPE_FREE) {`
`12370`	`12370`	`free(ptr);`
	`12371`	`+ ptr = NULL;`
`12371`	`12372`	`RB_DEBUG_COUNTER_INC(heap_xfree);`
`12372`	`12373`	`}`
`12373`	`12374`	`}`