In ExpressionEvaluationContextRecord manage LambdaMangle with a shared

pointer, otherwise we will double free it when ExpressionEvaluationContextRecord
gets copied.

Fixes crash in rdar://12645424 & http://llvm.org/PR14252

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167946 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 43 insertions, 0 deletions

diff --git a/test/SemaCXX/crash-lambda-12645424.cpp b/test/SemaCXX/crash-lambda-12645424.cpp
new file mode 100644
index 0000000000..8317e7c0db
--- /dev/null
+++ b/test/SemaCXX/crash-lambda-12645424.cpp
@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
+
+// rdar://12645424, crash due to a double-free
+
+template<typename _Tp> struct __add_lvalue_reference_helper {};
+template<typename _Tp> struct add_lvalue_reference :  __add_lvalue_reference_helper<_Tp> {
+  typedef _Tp type;
+};
+
+template<typename... Types> struct type_list;
+template<typename , template<typename> class... Funs> struct C;
+
+template<typename T> struct C<T> {
+	typedef T type;
+};
+
+template<typename T, template<typename>  class Fun0, template<typename> class... Funs> struct C<T, Fun0, Funs...> {
+  typedef  typename C<typename Fun0<T>::type, Funs...>::type type;
+};
+
+template<class , template<typename> class... Funs> struct tl_map;
+template<typename... Ts, template<typename> class... Funs> struct tl_map<type_list<Ts...>, Funs...> {
+  typedef type_list<typename C<Ts, Funs...>::type...> type;
+};
+
+template<   class Pattern> struct F {
+ typedef Pattern  filtered_pattern;
+  tl_map< filtered_pattern, add_lvalue_reference > type;
+};
+
+template<class, class Pattern> struct get_case {
+  F<Pattern> type;
+};
+
+template<class Pattern> struct rvalue_builder {
+  template<typename Expr> typename get_case<Expr, Pattern>::type operator>>(Expr ); // expected-note {{candidate template ignored}}
+};
+  
+template<typename Arg0> rvalue_builder< type_list<Arg0> > on(const Arg0& ) ;
+
+class Z {
+  int empty = on(0) >> [] {}; // expected-error {{invalid operands to binary expression}}
+};