1 files changed, 1 insertions, 1 deletions
diff --git a/lib/quickjs/quickjs.c b/lib/quickjs/quickjs.c
index 8f348e7e..a9e89211 100644
--- a/lib/quickjs/quickjs.c
+++ b/lib/quickjs/quickjs.c
@@ -4088,7 +4088,7 @@ void JS_FreeCString(JSContext *ctx, const char *ptr)
     if (!ptr)
         return;
     /* purposely removing constness */
-    p = (JSString *)(void *)(ptr - offsetof(JSString, u));
+    p = container_of(ptr, JSString, u);
     JS_FreeValue(ctx, JS_MKPTR(JS_TAG_STRING, p));
 }