From c692199dd2f0b2bcc72bf7e9fa948d24d4254ee3 Mon Sep 17 00:00:00 2001
From: "edburns%acm.org" <edburns%acm.org@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Thu, 9 Nov 2000 23:49:57 +0000
Subject: [PATCH] bug 59526 sr=waterson r=valeski

This bullet-proofs the code so the one thread does not exit twice.


git-svn-id: svn://10.0.0.236/trunk@82513 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/xpcom/threads/nsThread.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mozilla/xpcom/threads/nsThread.cpp b/mozilla/xpcom/threads/nsThread.cpp
index 64a10fa5a52..ca4d8475a93 100644
--- a/mozilla/xpcom/threads/nsThread.cpp
+++ b/mozilla/xpcom/threads/nsThread.cpp
@@ -101,6 +101,12 @@ nsThread::Exit(void* arg)
 {
     nsThread* self = (nsThread*)arg;
     self->mDead = PR_TRUE;
+
+    if (self->mDead) {
+        NS_ERROR("attempt to Exit() thread twice");
+        return;
+    }
+    
     PR_LOG(nsIThreadLog, PR_LOG_DEBUG,
            ("nsIThread %p exited\n", self));
     NS_RELEASE(self);