Do a second lookup for type_info in the global namespace in microsoft mode. PR13153.

llvm-svn: 158768

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
index 95dcbe9ad8d..a053c2aed60 100644
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -374,6 +374,12 @@ Sema::ActOnCXXTypeid(SourceLocation OpLoc, SourceLocation LParenLoc,
     LookupResult R(*this, TypeInfoII, SourceLocation(), LookupTagName);
     LookupQualifiedName(R, getStdNamespace());
     CXXTypeInfoDecl = R.getAsSingle<RecordDecl>();
+    // Microsoft's typeinfo doesn't have type_info in std but in the global
+    // namespace if _HAS_EXCEPTIONS is defined to 0. See PR13153.
+    if (!CXXTypeInfoDecl && LangOpts.MicrosoftMode) {
+      LookupQualifiedName(R, Context.getTranslationUnitDecl());
+      CXXTypeInfoDecl = R.getAsSingle<RecordDecl>();
+    }
     if (!CXXTypeInfoDecl)
       return ExprError(Diag(OpLoc, diag::err_need_header_before_typeid));
   }