From 6b18e740495b67b439fa366367242110365cc4d9 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Wed, 9 Nov 2011 02:19:47 +0000
Subject: [PATCH] Don't crash when transforming an ill-formed pseudo-destructor
 expression. Fixes PR11339.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144159 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/TreeTransform.h            | 2 +-
 test/SemaCXX/pseudo-destructors.cpp | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/Sema/TreeTransform.h b/lib/Sema/TreeTransform.h
index f55e2a706b..7c1dafb87f 100644
--- a/lib/Sema/TreeTransform.h
+++ b/lib/Sema/TreeTransform.h
@@ -7218,7 +7218,7 @@ TreeTransform<Derived>::TransformCXXPseudoDestructorExpr(
     if (!DestroyedTypeInfo)
       return ExprError();
     Destroyed = DestroyedTypeInfo;
-  } else if (ObjectType->isDependentType()) {
+  } else if (!ObjectType.isNull() && ObjectType->isDependentType()) {
     // We aren't likely to be able to resolve the identifier down to a type
     // now anyway, so just retain the identifier.
     Destroyed = PseudoDestructorTypeStorage(E->getDestroyedTypeIdentifier(),
diff --git a/test/SemaCXX/pseudo-destructors.cpp b/test/SemaCXX/pseudo-destructors.cpp
index d71304e28b..bd39848175 100644
--- a/test/SemaCXX/pseudo-destructors.cpp
+++ b/test/SemaCXX/pseudo-destructors.cpp
@@ -68,3 +68,12 @@ void test_X0(N1::X0 &x0) {
   x0.~X0();
 }
 
+namespace PR11339 {
+  template<class T>
+  void destroy(T* p) {
+    p->~T(); // ok
+    p->~oops(); // expected-error{{expected the class name after '~' to name a destructor}}
+  }
+
+  template void destroy(int*); // expected-note{{in instantiation of function template specialization}}
+}
-- 
2.50.1