From: Reid Kleckner <rnk@google.com>
Date: Tue, 16 Aug 2016 20:20:56 +0000 (+0000)
Subject: Try to work around an MSVC 2013 bug around defaulted default ctors
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=18235a513ad6541499c976dcbea6ffde90cc3e98;p=clang

Try to work around an MSVC 2013 bug around defaulted default ctors

An UnresolvedSetIterator() is supposed to be zeroed out, but MSVC 2013
does not do that.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@278842 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/AST/UnresolvedSet.h b/include/clang/AST/UnresolvedSet.h
index 868c5a6e19..b63c6eb217 100644
--- a/include/clang/AST/UnresolvedSet.h
+++ b/include/clang/AST/UnresolvedSet.h
@@ -38,7 +38,9 @@ class UnresolvedSetIterator : public llvm::iterator_adaptor_base<
       : iterator_adaptor_base(const_cast<DeclAccessPair *>(Iter)) {}
 
 public:
-  UnresolvedSetIterator() = default;
+  // Work around a bug in MSVC 2013 where explicitly default constructed
+  // temporaries with defaulted ctors are not zero initialized.
+  UnresolvedSetIterator() : iterator_adaptor_base(nullptr) {}
 
   NamedDecl *getDecl() const { return I->getDecl(); }
   void setDecl(NamedDecl *ND) const { return I->setDecl(ND); }