Don't crash-on-valid when an inline function is friend of class template

We assumed that the most recent declaration of an inline function would
also be inline.  However, a more recent declaration can come from a
friend declaration in a class template that is instantiated at the
definition of the function.

llvm-svn: 232786

1 files changed, 15 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/inline-functions.cpp b/clang/test/CodeGenCXX/inline-functions.cpp
index 622cfa9536f..20da1f63180 100644
--- a/clang/test/CodeGenCXX/inline-functions.cpp
+++ b/clang/test/CodeGenCXX/inline-functions.cpp
@@ -121,3 +121,18 @@ struct TypeWithInlineMethods {
   // CHECK-NOT: _ZN21TypeWithInlineMethods12NonStaticFunEv
   void NonStaticFun() { StaticFun(); }
 };
+
+namespace PR22959 {
+template <typename>
+struct S;
+
+S<int> Foo();
+
+template <typename>
+struct S {
+  friend S<int> Foo();
+};
+
+__attribute__((used)) inline S<int> Foo() { return S<int>(); }
+// CHECK-LABEL: define linkonce_odr void @_ZN7PR229593FooEv(
+}