Serialize the IDNS for a UsingShadowDecl rather than recomputing it.
Attempting to recompute it are doomed to fail because the IDNS of a declaration
is not necessarily preserved across serialization and deserialization (in turn
because whether a friend declaration is visible depends on whether some prior
non-friend declaration exists).
llvm-svn: 321921
diff --git a/clang/lib/Serialization/ASTWriterDecl.cpp b/clang/lib/Serialization/ASTWriterDecl.cpp
index bb72a3b..341f0e1 100644
--- a/clang/lib/Serialization/ASTWriterDecl.cpp
+++ b/clang/lib/Serialization/ASTWriterDecl.cpp
@@ -1192,6 +1192,7 @@
VisitRedeclarable(D);
VisitNamedDecl(D);
Record.AddDeclRef(D->getTargetDecl());
+ Record.push_back(D->getIdentifierNamespace());
Record.AddDeclRef(D->UsingOrNextShadow);
Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D));
Code = serialization::DECL_USING_SHADOW;