r206644 - Don't read CompilerInstance fields that don't exist in ASTUnit

[Ben Langmuir]

Author: benlangmuir
Date: Fri Apr 18 15:39:48 2014
New Revision: 206644

URL: http://llvm.org/viewvc/llvm-project?rev=206644&view=rev
Log:
Don't read CompilerInstance fields that don't exist in ASTUnit

When transferring data from a CompilerInstance in an error path we need
to consider cases where the various fields are uninitialized.

Modified:
    cfe/trunk/lib/Frontend/ASTUnit.cpp

Modified: cfe/trunk/lib/Frontend/ASTUnit.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/ASTUnit.cpp?rev=206644&r1=206643&r2=206644&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/ASTUnit.cpp (original)
+++ cfe/trunk/lib/Frontend/ASTUnit.cpp Fri Apr 18 15:39:48 2014
@@ -1717,11 +1717,14 @@ void ASTUnit::transferASTDataFromCompile
   // Steal the created target, context, and preprocessor.
   TheSema.reset(CI.takeSema());
   Consumer.reset(CI.takeASTConsumer());
-  Ctx = &CI.getASTContext();
-  PP = &CI.getPreprocessor();
+  if (CI.hasASTContext())
+    Ctx = &CI.getASTContext();
+  if (CI.hasPreprocessor())
+    PP = &CI.getPreprocessor();
   CI.setSourceManager(0);
   CI.setFileManager(0);
-  Target = &CI.getTarget();
+  if (CI.hasTarget())
+    Target = &CI.getTarget();
   Reader = CI.getModuleManager();
   HadModuleLoaderFatalFailure = CI.hadModuleLoaderFatalFailure();
 }