PR11851 (and duplicates): Whenever a constexpr function is referenced,

instantiate it if it can be instantiated and implicitly define it if it can be
implicitly defined. This matches g++'s approach. Remove some cases from
SemaOverload which were marking functions as referenced when just planning how
overload resolution would proceed; such cases are not actually references.

llvm-svn: 167514

1 files changed, 4 insertions, 7 deletions

diff --git a/clang/test/SemaCXX/implicit-exception-spec.cpp b/clang/test/SemaCXX/implicit-exception-spec.cpp
index b29cff5c5d1..e26f985f0d0 100644
--- a/clang/test/SemaCXX/implicit-exception-spec.cpp
+++ b/clang/test/SemaCXX/implicit-exception-spec.cpp
@@ -30,20 +30,17 @@ namespace InClassInitializers {
   bool x = noexcept(TemplateArg());
 
   // And within a nested class.
-  // FIXME: The diagnostic location is terrible here.
-  struct Nested {
+  struct Nested { // expected-error {{cannot be used by non-static data member initializer}}
     struct Inner {
-      int n = ExceptionIf<noexcept(Nested())>::f();
-    } inner; // expected-error {{cannot be used by non-static data member initializer}}
+      int n = ExceptionIf<noexcept(Nested())>::f(); // expected-note {{implicit default constructor for 'InClassInitializers::Nested' first required here}}
+    } inner;
   };
-  bool y = noexcept(Nested());
-  bool z = noexcept(Nested::Inner());
 
   struct Nested2 {
     struct Inner;
     int n = Inner().n; // expected-error {{cannot be used by non-static data member initializer}}
     struct Inner {
-      int n = ExceptionIf<noexcept(Nested())>::f();
+      int n = ExceptionIf<noexcept(Nested2())>::f();
     } inner;
   };
 }