From 87bdf20c9d28e09927f5987bf71a61c4ffb714d2 Mon Sep 17 00:00:00 2001
From: "mrbkap%gmail.com"
 <mrbkap%gmail.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Fri, 21 Oct 2005 00:26:56 +0000
Subject: [PATCH] bug 312278: Protect some objects from getting GC'd before we
 could root them. r=brendan

git-svn-id: svn://10.0.0.236/trunk@182667 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/js/src/jsexn.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mozilla/js/src/jsexn.c b/mozilla/js/src/jsexn.c
index 266a3a27a27..6cb393cd112 100644
--- a/mozilla/js/src/jsexn.c
+++ b/mozilla/js/src/jsexn.c
@@ -985,6 +985,11 @@ js_ErrorToException(JSContext *cx, const char *message, JSErrorReport *reportp)
         return JS_FALSE;
     cx->creatingException = JS_TRUE;
 
+    /* Protect the newly-created strings below from nesting GCs. */
+    ok = js_EnterLocalRootScope(cx);
+    if (!ok)
+        goto out;
+
     /*
      * Try to get an appropriate prototype by looking up the corresponding
      * exception constructor name in the scope chain of the current context's
@@ -1047,6 +1052,7 @@ js_ErrorToException(JSContext *cx, const char *message, JSErrorReport *reportp)
     reportp->flags |= JSREPORT_EXCEPTION;
 
 out:
+    js_LeaveLocalRootScope(cx);
     cx->creatingException = JS_FALSE;
     return ok;
 }