Allow clients of the AST reader to specify what kinds of AST load

failures they know how to tolerate, e.g., out-of-date input files or
configuration/version mismatches. Suppress the corresponding
diagnostics if the client can handle it.

No clients actually use this functionality, yet.

llvm-svn: 166449

1 files changed, 4 insertions, 2 deletions

diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 225bc137..3806f57 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -343,7 +343,8 @@ CompilerInstance::createPCHExternalASTSource(StringRef Path,
             static_cast<ASTDeserializationListener *>(DeserializationListener));
   switch (Reader->ReadAST(Path,
                           Preamble ? serialization::MK_Preamble
-                                   : serialization::MK_PCH)) {
+                                   : serialization::MK_PCH,
+                          ASTReader::ARR_None)) {
   case ASTReader::Success:
     // Set the predefines buffer as suggested by the PCH reader. Typically, the
     // predefines buffer will be empty.
@@ -965,7 +966,8 @@ Module *CompilerInstance::loadModule(SourceLocation ImportLoc,
 
     // Try to load the module we found.
     switch (ModuleManager->ReadAST(ModuleFile->getName(),
-                                   serialization::MK_Module)) {
+                                   serialization::MK_Module,
+                                   ASTReader::ARR_None)) {
     case ASTReader::Success:
       break;