tor-browser

commit 9b43f81cda2a5d28688182f44c59506dfe9474af
parent 66c0bf0d3c3f3693d1274c644e8ce9aa30d80c4f
Author: Serah Nderi <snderi@igalia.com>
Date:   Thu,  8 Jan 2026 06:40:00 +0000

Bug 2007291 - Perma Assertion failure: false, at /builds/worker/checkouts/gecko/js/src/vm/SelfHosting.cpp:X - when Gecko 148 merges to beta on 2026-01-12;  r=iain

Differential Revision: https://phabricator.services.mozilla.com/D277448

Diffstat:
M
js/src/builtin/RegExp.js
 | 
10
++++++++--

1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/js/src/builtin/RegExp.js b/js/src/builtin/RegExp.js
@@ -949,7 +949,10 @@ function RegExpSplit(string, limit) {
   if (optimizable) {
     // Step 5.
     flags = UnsafeGetInt32FromReservedSlot(rx, REGEXP_FLAGS_SLOT);
-    assert(!!(flags & REGEXP_LEGACY_FEATURES_ENABLED_FLAG), "Legacy features must be enabled in optimized path");
+    #ifdef NIGHTLY_BUILD
+    assert(!!(flags & REGEXP_LEGACY_FEATURES_ENABLED_FLAG),
+           "Legacy features must be enabled in optimized path");
+    #endif
     // Steps 6-7.
     unicodeMatching = !!(flags & REGEXP_UNICODE_FLAG);
 
@@ -1215,7 +1218,10 @@ function RegExpMatchAll(string) {
     // Step 5, 9-12.
     source = UnsafeGetStringFromReservedSlot(rx, REGEXP_SOURCE_SLOT);
     flags = UnsafeGetInt32FromReservedSlot(rx, REGEXP_FLAGS_SLOT);
-    assert(!!(flags & REGEXP_LEGACY_FEATURES_ENABLED_FLAG), "Legacy features must be enabled in optimized path");
+    #ifdef NIGHTLY_BUILD
+    assert(!!(flags & REGEXP_LEGACY_FEATURES_ENABLED_FLAG),
+    "Legacy features must be enabled in optimized path");
+    #endif
 
     // Step 6.
     matcher = rx;