tor-browser

commit a5316cedc669bcec09efae23521e0af6b9d3d257
parent 71a99f8c272bfc0253db898105f5571f58dfb848
Author: Matthew Gaudet <mgaudet@mozilla.com>
Date:   Tue, 21 Oct 2025 16:48:09 +0000

Bug 1995409 - Don't try to check for microtasks if there is no JSContext available r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D269437

Diffstat:
M
xpcom/base/CycleCollectedJSContext.cpp
 | 
6
++++++

1 file changed, 6 insertions(+), 0 deletions(-)
diff --git a/xpcom/base/CycleCollectedJSContext.cpp b/xpcom/base/CycleCollectedJSContext.cpp
@@ -1120,6 +1120,12 @@ bool CycleCollectedJSContext::PerformMicroTaskCheckPoint(bool aForce) {
   JSContext* cx = Context();
 
   if (StaticPrefs::javascript_options_use_js_microtask_queue()) {
+    // If we have no JSContext we are not capable of checking for
+    // nor running microtasks, and so simply return false early here.
+    if (!cx) {
+      return false;
+    }
+
     if (!JS::HasAnyMicroTasks(cx)) {
       MOZ_ASSERT(mDebuggerMicroTaskQueue.empty());
       MOZ_ASSERT(mPendingMicroTaskRunnables.empty());