Fix handling of const_cast from prvalue to rvalue reference: such a cast is

only permitted if the source object is of class type, and should materialize a
temporary for the reference to bind to.

llvm-svn: 184017

1 files changed, 2 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/const-cast.cpp b/clang/test/SemaCXX/const-cast.cpp
index 62851f81280..1fe350d1977 100644
--- a/clang/test/SemaCXX/const-cast.cpp
+++ b/clang/test/SemaCXX/const-cast.cpp
@@ -38,6 +38,7 @@ char ***good_const_cast_test(ccvpcvpp var)
   f *fpp = const_cast<f*>(&fp);
   int const A::* const A::*icapcap = 0;
   int A::* A::* iapap = const_cast<int A::* A::*>(icapcap);
+  (void)const_cast<A&&>(A()); // expected-warning {{C++11}}
 
   return var4;
 }
@@ -60,5 +61,6 @@ short *bad_const_cast_test(char const *volatile *const volatile *var)
   f fp2 = const_cast<f>(fp1); // expected-error {{const_cast to 'f' (aka 'int (*)(int)'), which is not a reference, pointer-to-object, or pointer-to-data-member}}
   void (A::*mfn)() = 0;
   (void)const_cast<void (A::*)()>(mfn); // expected-error {{const_cast to 'void (A::*)()', which is not a reference, pointer-to-object, or pointer-to-data-member}}
+  (void)const_cast<int&&>(0); // expected-error {{const_cast from rvalue to reference type 'int &&'}} expected-warning {{C++11}}
   return **var3;
 }