tor-browser

commit 959de40681ae878815a0db8f4ff5de226f423ac4
parent 3ea539dde1ef7c658c339f5e5a0c20914951c83c
Author: Jon Coppeard <jcoppeard@mozilla.com>
Date:   Tue, 14 Oct 2025 06:49:20 +0000

Bug 1966745 - Part 1: Add a shell switch to disable symbols as weakmap keys r=sfink

Differential Revision: https://phabricator.services.mozilla.com/D268376

Diffstat:
M
js/src/shell/js.cpp
 | 
12
+++++++++++-

1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/js/src/shell/js.cpp b/js/src/shell/js.cpp
@@ -12821,6 +12821,8 @@ bool InitOptionParser(OptionParser& op) {
                         "Disable Object.groupBy and Map.groupBy") ||
       !op.addBoolOption('\0', "enable-symbols-as-weakmap-keys",
                         "Enable Symbols As WeakMap keys") ||
+      !op.addBoolOption('\0', "no-symbols-as-weakmap-keys",
+                        "Disable Symbols As WeakMap keys") ||
       !op.addBoolOption('\0', "enable-uint8array-base64",
                         "Enable Uint8Array base64/hex methods") ||
       !op.addBoolOption('\0', "enable-regexp-duplicate-named-groups",
@@ -13235,9 +13237,17 @@ bool SetGlobalOptionsPreJSInit(const OptionParser& op) {
   if (op.getBoolOption("enable-error-iserror")) {
     JS::Prefs::set_experimental_error_iserror(true);
   }
+
+  bool symbolsAsWeakMapKeys = false;
   if (op.getBoolOption("enable-symbols-as-weakmap-keys")) {
-    JS::Prefs::setAtStartup_experimental_symbols_as_weakmap_keys(true);
+    symbolsAsWeakMapKeys = true;
+  }
+  if (op.getBoolOption("no-symbols-as-weakmap-keys")) {
+    symbolsAsWeakMapKeys = false;
   }
+  JS::Prefs::setAtStartup_experimental_symbols_as_weakmap_keys(
+      symbolsAsWeakMapKeys);
+
 #ifdef NIGHTLY_BUILD
   if (op.getBoolOption("enable-async-iterator-helpers")) {
     JS::Prefs::setAtStartup_experimental_async_iterator_helpers(true);