Fix <rdar://problem/6336774> clang block rewriter: Assertion failed: Offset+NumBytes <= size() && "Invalid region to erase!", file c:\cygwin\home\Administrator\llvm\to ols\clang\include\clang/Rewrite/RewriteRope.h, line 219.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58607 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/RewriteObjC.cpp b/Driver/RewriteObjC.cpp
index 39f4f15..ee9e2bc 100644
--- a/Driver/RewriteObjC.cpp
+++ b/Driver/RewriteObjC.cpp
@@ -3570,6 +3570,9 @@
// Need to avoid trying to rewrite synthesized casts.
if (LocStart.isInvalid())
return;
+ // Need to avoid trying to rewrite casts contained in macros.
+ if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
+ return;
const char *startBuf = SM->getCharacterData(LocStart);
const char *endBuf = SM->getCharacterData(LocEnd);