Restructure checking for, and warning on, lifetime extension.

This change implements C++ DR1696, which makes initialization of a
reference member of a class from a temporary object ill-formed. The
standard wording here is imprecise, but we interpret it as meaning that
any time a mem-initializer would result in lifetime extension, the
program is ill-formed.

llvm-svn: 337226

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/test/SemaCXX/constexpr-default-arg.cpp b/clang/test/SemaCXX/constexpr-default-arg.cpp
index 2fc873c3e5b..165c31aab63 100644
--- a/clang/test/SemaCXX/constexpr-default-arg.cpp
+++ b/clang/test/SemaCXX/constexpr-default-arg.cpp
@@ -31,8 +31,8 @@ void test_default_arg2() {
 }
 
 // Check that multiple CXXDefaultInitExprs don't cause an assertion failure.
-struct A { int &&r = 0; }; // expected-warning {{binding reference member}} // expected-note {{reference member declared here}}
+struct A { int &&r = 0; }; // expected-warning 2{{not supported}}
 struct B { A x, y; };
-B b = {};
+B b = {}; // expected-note 2{{in default member initializer for field 'r' used here}}
 
 }