--- libraries/source/spidermonkey/FixBug1119228.diff	1970-01-01 01:00:00.000000000 +0100
+++ libraries/source/spidermonkey/FixBug1119228.diff	2015-05-25 01:23:08.000000000 +0200
@@ -0,0 +1,65 @@
+# Backport of
+# HG changeset patch
+# User Ehsan Akhgari <ehsan@mozilla.com>
+# Date 1420727118 18000
+# Node ID bcacb5692ad902fc0ec6ebea2ad382a8a3fd5183
+# Parent  48f8a884901ba9753d3bddab08f25c60e1915601
+Bug 1119228 - Fix a fatal warning in PossiblyFail; r=jandem
+
+Recent clang emits the following warning (which is treated as an error) on this code:
+error: implicit conversion of nullptr constant to 'bool' [-Werror,-Wnull-conversion]
+
+
+diff --git a/js/public/Utility.h b/js/public/Utility.h
+--- a/js/public/Utility.h
++++ b/js/public/Utility.h
+@@ -83,19 +83,28 @@ static MOZ_NEVER_INLINE void js_failedAl
+ #  define JS_OOM_POSSIBLY_FAIL() \
+     do \
+     { \
+         if (++OOM_counter > OOM_maxAllocations) { \
+             JS_OOM_CALL_BP_FUNC();\
+             return nullptr; \
+         } \
+     } while (0)
++#  define JS_OOM_POSSIBLY_FAIL_BOOL() \
++    do \
++    { \
++        if (++OOM_counter > OOM_maxAllocations) { \
++            JS_OOM_CALL_BP_FUNC();\
++            return false; \
++        } \
++    } while (0)
+ 
+ # else
+ #  define JS_OOM_POSSIBLY_FAIL() do {} while(0)
++#  define JS_OOM_POSSIBLY_FAIL_BOOL() do {} while(0)
+ # endif /* DEBUG || JS_OOM_BREAKPOINT */
+ 
+ static inline void* js_malloc(size_t bytes)
+ {
+     JS_OOM_POSSIBLY_FAIL();
+     return malloc(bytes);
+ }
+
+--- a/js/src/jsgcinlines.h
++++ b/js/src/jsgcinlines.h
+@@ -403,17 +403,17 @@
+     }
+     return nullptr;
+ }
+ #endif /* JSGC_GENERATIONAL */
+
+ static inline bool
+ PossiblyFail()
+ {
+-    JS_OOM_POSSIBLY_FAIL();
++    JS_OOM_POSSIBLY_FAIL_BOOL();
+     return true;
+ }
+
+ template <AllowGC allowGC>
+ static inline bool
+ CheckAllocatorState(ThreadSafeContext *cx, AllocKind kind)
+ {
+     if (!cx->isJSContext())