Fix RewriteObjC::RewriteObjCThrowStmt() to respect whitespace between the @ and throw.
This fixes <rdar://problem/5988388> clang ObjC rewriter: mystery 'w' inserted in exception throw.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54017 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/RewriteObjC.cpp b/Driver/RewriteObjC.cpp
index 0ee0599..641da18 100644
--- a/Driver/RewriteObjC.cpp
+++ b/Driver/RewriteObjC.cpp
@@ -1493,7 +1493,12 @@
buf = "objc_exception_throw(";
else // add an implicit argument
buf = "objc_exception_throw(_caught";
- ReplaceText(startLoc, 6, buf.c_str(), buf.size());
+
+ // handle "@ throw" correctly.
+ const char *wBuf = strchr(startBuf, 'w');
+ assert((*wBuf == 'w') && "@throw: can't find 'w'");
+ ReplaceText(startLoc, wBuf-startBuf+1, buf.c_str(), buf.size());
+
const char *semiBuf = strchr(startBuf, ';');
assert((*semiBuf == ';') && "@throw: can't find ';'");
SourceLocation semiLoc = startLoc.getFileLocWithOffset(semiBuf-startBuf);