1 files changed, 44 insertions, 0 deletions
diff --git a/gnu/packages/patches/icecat-CVE-2015-0817.patch b/gnu/packages/patches/icecat-CVE-2015-0817.patch
new file mode 100644
index 0000000000..bb530a535d
--- /dev/null
+++ b/gnu/packages/patches/icecat-CVE-2015-0817.patch
@@ -0,0 +1,44 @@
+From cedbdf8290018fbef65458e9e438c72adf2c2775 Mon Sep 17 00:00:00 2001
+From: Steve Fink <sfink@mozilla.com>
+Date: Thu, 19 Mar 2015 15:46:24 -0700
+Subject: [PATCH] Bug 1145255. r=luke, a=lmandel
+
+---
+ js/src/jit/AsmJS.cpp | 13 +++++++++++--
+ 1 file changed, 11 insertions(+), 2 deletions(-)
+
+diff --git a/js/src/jit/AsmJS.cpp b/js/src/jit/AsmJS.cpp
+index 302b5ab..1b8eed6 100644
+--- a/js/src/jit/AsmJS.cpp
++++ b/js/src/jit/AsmJS.cpp
+@@ -14,6 +14,7 @@
+ 
+ #include "jsmath.h"
+ #include "jsprf.h"
++#include "jsutil.h"
+ #include "jsworkers.h"
+ #include "prmjtime.h"
+ 
+@@ -3432,9 +3433,17 @@ FoldMaskedArrayIndex(FunctionCompiler &f, ParseNode **indexExpr, int32_t *mask,
+     if (IsLiteralOrConstInt(f, maskNode, &mask2)) {
+         // Flag the access to skip the bounds check if the mask ensures that an 'out of
+         // bounds' access can not occur based on the current heap length constraint.
+-        if (mask2 == 0 ||
+-            CountLeadingZeroes32(f.m().minHeapLength() - 1) <= CountLeadingZeroes32(mask2)) {
++        if (mask2 == 0) {
+             *needsBoundsCheck = NO_BOUNDS_CHECK;
++        } else {
++            uint32_t minHeap = f.m().minHeapLength();
++            uint32_t minHeapZeroes = CountLeadingZeroes32(minHeap - 1);
++            uint32_t maskZeroes = CountLeadingZeroes32(mask2);
++            if ((minHeapZeroes < maskZeroes) ||
++                (IsPowerOfTwo(minHeap) && minHeapZeroes == maskZeroes))
++            {
++                *needsBoundsCheck = NO_BOUNDS_CHECK;
++            }
+         }
+         *mask &= mask2;
+         *indexExpr = indexNode;
+-- 
+2.2.1
+