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When we are deserializing the lexical decls of a DeclContext from PCH, notify the PCHReader to hold off passing Decls 

to the consumer until the DeclContext is fully prepared.

Before, due to recursive loading, we could be in a situation where we would try to deserialize the decls of a DeclContext which was already doing that, and bad things would happen. In the specific case I encountered, the lexical decls would
form a cycle and we would enter infinite loop territory.

llvm-svn: 109857
This commit is contained in:
Argyrios Kyrtzidis 2010-07-30 10:03:23 +00:00
parent b24355af87
commit 98d045eb68
1 changed files with 3 additions and 0 deletions
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3
clang/lib/AST/DeclBase.cpp
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@ -606,6 +606,9 @@ DeclContext::LoadLexicalDeclsFromExternalStorage() const {
ExternalASTSource *Source = getParentASTContext().getExternalSource();
assert(hasExternalLexicalStorage() && Source && "No external storage?");
// Notify that we have a DeclContext that is initializing.
ExternalASTSource::Deserializing ADeclContext(Source);
llvm::SmallVector<Decl*, 64> Decls;
if (Source->FindExternalLexicalDecls(this, Decls))
return;