1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mfbt/double-conversion/use-static_assert.patch Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,25 @@
1.4 +diff --git a/mfbt/double-conversion/utils.h b/mfbt/double-conversion/utils.h
1.5 +--- a/mfbt/double-conversion/utils.h
1.6 ++++ b/mfbt/double-conversion/utils.h
1.7 +@@ -275,19 +275,18 @@ class StringBuilder {
1.8 + // There is an additional use for BitCast.
1.9 + // Recent gccs will warn when they see casts that may result in breakage due to
1.10 + // the type-based aliasing rule. If you have checked that there is no breakage
1.11 + // you can use BitCast to cast one pointer type to another. This confuses gcc
1.12 + // enough that it can no longer see that you have cast one pointer type to
1.13 + // another thus avoiding the warning.
1.14 + template <class Dest, class Source>
1.15 + inline Dest BitCast(const Source& source) {
1.16 +- // Compile time assertion: sizeof(Dest) == sizeof(Source)
1.17 +- // A compile error here means your Dest and Source have different sizes.
1.18 +- typedef char VerifySizesAreEqual[sizeof(Dest) == sizeof(Source) ? 1 : -1];
1.19 ++ static_assert(sizeof(Dest) == sizeof(Source),
1.20 ++ "BitCast's source and destination types must be the same size");
1.21 +
1.22 + Dest dest;
1.23 + memmove(&dest, &source, sizeof(dest));
1.24 + return dest;
1.25 + }
1.26 +
1.27 + template <class Dest, class Source>
1.28 + inline Dest BitCast(Source* source) {
