From 4d9b05b1714b1ac30f5b78e8058a458869d99d00 Mon Sep 17 00:00:00 2001
From: Chris Leary <cdleary@mozilla.com>
Date: Fri, 24 Feb 2012 11:15:32 -0800
Subject: [PATCH] Bug 700822: Followup: add comment about use of static local.
 (r=bz)

---
 js/src/assembler/jit/ExecutableAllocatorWin.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/js/src/assembler/jit/ExecutableAllocatorWin.cpp b/js/src/assembler/jit/ExecutableAllocatorWin.cpp
index 457ee5de1463..d65fa097e46f 100644
--- a/js/src/assembler/jit/ExecutableAllocatorWin.cpp
+++ b/js/src/assembler/jit/ExecutableAllocatorWin.cpp
@@ -94,6 +94,8 @@ RandomizeIsBrokenImpl()
 static bool
 RandomizeIsBroken()
 {
+    // Use the compiler's intrinsic guards for |static type value = expr| to avoid some potential
+    // races if runtimes are created from multiple threads.
     static int result = RandomizeIsBrokenImpl();
     return !!result;
 }