diff -r 000000000000 -r 6474c204b198 mfbt/double-conversion/fix-gcc-warnings.patch
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mfbt/double-conversion/fix-gcc-warnings.patch	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+diff --git a/a/mfbt/double-conversion/strtod.cc b/inbound/mfbt/double-conversion/strtod.cc
+index 9758989..97fa4a5 100644
+--- a/a/mfbt/double-conversion/strtod.cc
++++ b/inbound/mfbt/double-conversion/strtod.cc
+@@ -501,17 +501,19 @@ float Strtof(Vector<const char> buffer, int exponent) {
+   // if they would round to the same float. If the guess is not correct we have
+   // to look at four values (since two different doubles could be the correct
+   // double).
+ 
+   double double_next = Double(double_guess).NextDouble();
+   double double_previous = Double(double_guess).PreviousDouble();
+ 
+   float f1 = static_cast<float>(double_previous);
++#if defined(DEBUG)
+   float f2 = float_guess;
++#endif
+   float f3 = static_cast<float>(double_next);
+   float f4;
+   if (is_correct) {
+     f4 = f3;
+   } else {
+     double double_next2 = Double(double_next).NextDouble();
+     f4 = static_cast<float>(double_next2);
+   }