Itanium mangler: don't trip an assertion when unresolved members have implicit bases.

When we find a member of the current instantation, the base of the
unresolved member expression is implicit; use nullptr for such
bases. This is not a change in behavior: the AST already contains null
in such cases, so non-asserts builds do the right thing already. Fixes
rdar://problem/21020559.

llvm-svn: 237929

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/mangle-exprs.cpp b/clang/test/CodeGenCXX/mangle-exprs.cpp
index ee2d546938e..ee7594b2fdd 100644
--- a/clang/test/CodeGenCXX/mangle-exprs.cpp
+++ b/clang/test/CodeGenCXX/mangle-exprs.cpp
@@ -329,3 +329,15 @@ namespace test7 {
     fF2(1); // CHECK-LABEL: define {{.*}} @_ZN5test73fF2IiEEDTcmcvNS_1FEilLi1ELi2EEcvT__EES2_
   }
 }
+
+
+namespace test8 {
+  template <class>
+  struct X {
+    template<typename T> T foo() const { return 0; }
+    template <class T> auto bar() const -> decltype(foo<T>()) { return 0; }
+  };
+
+  // CHECK-LABEL: define weak_odr i32 @_ZNK5test81XIiE3barIiEEDTcl3fooIT_EEEv
+  template int X<int>::bar<int>() const;
+}