From: Steve Naroff <snaroff@apple.com>
Date: Fri, 25 Jul 2008 15:41:30 +0000 (+0000)
Subject: Fix RewriteObjC::RewriteObjCThrowStmt() to respect whitespace between the @ and throw.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4ba0acbe835b12b3755d138f364cd67044d7322f;p=clang

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 0ee0599b89..641da1877d 100644
--- a/Driver/RewriteObjC.cpp
+++ b/Driver/RewriteObjC.cpp
@@ -1493,7 +1493,12 @@ Stmt *RewriteObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
     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);