ConvertUTF.h: Suppress a warning with ptrdiff_t on i686. [-Wsign-compare]
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173436 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/ConvertUTF.h b/include/clang/Basic/ConvertUTF.h
index 2d13d2c..7e04a12 100644
--- a/include/clang/Basic/ConvertUTF.h
+++ b/include/clang/Basic/ConvertUTF.h
@@ -217,7 +217,7 @@
if (*source == sourceEnd)
return sourceExhausted;
unsigned size = getNumBytesForUTF8(**source);
- if (size > sourceEnd - *source)
+ if ((ptrdiff_t)size > sourceEnd - *source)
return sourceExhausted;
return ConvertUTF8toUTF32(source, *source + size, &target, target + 1, flags);
}