[modules] If we hit a failure while loading a PCH/module, abort parsing instead of trying to continue in an invalid state.

Also don't let libclang create a PCH with such an error.

Fixes rdar://13953768

llvm-svn: 182629

1 files changed, 2 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index cf856fc2ab6..b4bb6f32517 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -1247,12 +1247,14 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
     case ASTReader::VersionMismatch:
     case ASTReader::ConfigurationMismatch:
     case ASTReader::HadErrors:
+      ModuleLoader::HadFatalFailure = true;
       // FIXME: The ASTReader will already have complained, but can we showhorn
       // that diagnostic information into a more useful form?
       KnownModules[Path[0].first] = 0;
       return ModuleLoadResult();
 
     case ASTReader::Failure:
+      ModuleLoader::HadFatalFailure = true;
       // Already complained, but note now that we failed.
       KnownModules[Path[0].first] = 0;
       ModuleBuildFailed = true;