# HG changeset patch
# User Steve Fink <sfink@mozilla.com>
# Date 1746227785 0
# Node ID 5c04f022856284273c3f1a0367a599431798bab3
# Parent  0a9b2997cbcf9652ce9440ba74cbbb3bf513a937
Bug 1953622 - Suppress -Wdangling-pointer warning when storing a Rooted address r=spidermonkey-reviewers,jonco

Differential Revision: https://phabricator.services.mozilla.com/D241310


diff --git a/js/public/RootingAPI.h b/js/public/RootingAPI.h
--- a/js/public/RootingAPI.h
+++ b/js/public/RootingAPI.h
@@ -1140,21 +1140,30 @@ using RootedTraits =
  * function that requires a handle, e.g. Foo(Root<T>(cx, x)).
  *
  * If you want to add additional methods to Rooted for a specific
  * specialization, define a RootedOperations<T> specialization containing them.
  */
 template <typename T>
 class MOZ_RAII Rooted : public detail::RootedTraits<T>::StackBase,
                         public js::RootedOperations<T, Rooted<T>> {
+
+  // Intentionally store a pointer into the stack.
+#if defined(__clang__) || (defined(__GNUC__) && __GNUC__ >= 12)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-pointer"
+#endif
   inline void registerWithRootLists(RootedListHeads& roots) {
     this->stack = &roots[JS::MapTypeToRootKind<T>::kind];
     this->prev = *this->stack;
     *this->stack = this;
   }
+#if defined(__clang__) || (defined(__GNUC__) && __GNUC__ >= 12)
+#pragma GCC diagnostic pop
+#endif
 
   inline RootedListHeads& rootLists(RootingContext* cx) {
     return cx->stackRoots_;
   }
   inline RootedListHeads& rootLists(JSContext* cx) {
     return rootLists(RootingContext::get(cx));
   }