Implement -fno-validate-pch at the -cc1 level, which suppresses most
of the usual consistency checks used to determine when a precompiled
header is incompatible with the translation unit it's being loaded
into.
Enable this option when loading a precompiled preamble, because the
preamble loader will be performing all of this checking itself. Enable
the preamble-based test now that it's working.
This option is also useful for debugging Clang's PCH
(<rdar://problem/7532213>).
llvm-svn: 109475
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 0b1041f..ea29568 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -250,9 +250,11 @@
// ExternalASTSource
-void CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path) {
+void CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path,
+ bool DisablePCHValidation) {
llvm::OwningPtr<ExternalASTSource> Source;
Source.reset(createPCHExternalASTSource(Path, getHeaderSearchOpts().Sysroot,
+ DisablePCHValidation,
getPreprocessor(), getASTContext()));
// Remember the PCHReader, but in a non-owning way.
Reader = static_cast<PCHReader*>(Source.get());
@@ -262,11 +264,13 @@
ExternalASTSource *
CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path,
const std::string &Sysroot,
+ bool DisablePCHValidation,
Preprocessor &PP,
ASTContext &Context) {
llvm::OwningPtr<PCHReader> Reader;
Reader.reset(new PCHReader(PP, &Context,
- Sysroot.empty() ? 0 : Sysroot.c_str()));
+ Sysroot.empty() ? 0 : Sysroot.c_str(),
+ DisablePCHValidation));
switch (Reader->ReadPCH(Path)) {
case PCHReader::Success: