From: Ted Kremenek <kremenek@apple.com>
Date: Mon, 28 Jun 2010 20:32:40 +0000 (+0000)
Subject: Don't crash in InitializePreprocessor() when there is no valid PTHManager.  Fixes... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4ae4c919205307c6e98e6c920aa55019040cbe77;p=clang

Don't crash in InitializePreprocessor() when there is no valid PTHManager.  Fixes <rdar://problem/8098441>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107061 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index c9c76e5f1f..349dd7bf98 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -84,7 +84,8 @@ static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
                                   llvm::StringRef ImplicitIncludePTH) {
   PTHManager *P = PP.getPTHManager();
   assert(P && "No PTHManager.");
-  const char *OriginalFile = P->getOriginalSourceFile();
+  // Null check 'P' in the corner case where it couldn't be created.
+  const char *OriginalFile = P ? P->getOriginalSourceFile() : 0;
 
   if (!OriginalFile) {
     PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)