From decaff11aae7708efe3eefb5ad4612ad0919b7a7 Mon Sep 17 00:00:00 2001 From: Richard Smith Date: Tue, 10 Oct 2017 21:07:44 +0000 Subject: [PATCH] Add test for regression caused by reverted patch r315251. llvm-svn: 315366 --- clang/test/SemaCXX/linkage2.cpp | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/clang/test/SemaCXX/linkage2.cpp b/clang/test/SemaCXX/linkage2.cpp index 8c80f4bdb901..6f43af39f7c5 100644 --- a/clang/test/SemaCXX/linkage2.cpp +++ b/clang/test/SemaCXX/linkage2.cpp @@ -218,3 +218,34 @@ namespace PR18964 { unsigned &*foo; //expected-error{{'foo' declared as a pointer to a reference of type}} extern struct {} *foo; // don't assert } + +namespace typedef_name_for_linkage { + template struct Use {}; + + struct A { A(); A(const A&); ~A(); }; + + typedef struct { + A a; + } B; + + struct C { + typedef struct { + A a; + } D; + }; + + typedef struct { + void f() { static int n; struct Inner {};} + } E; + + // FIXME: Ideally this would be accepted in all modes. In C++98, we trigger a + // linkage calculation to drive the "internal linkage type as template + // argument" warning. + typedef struct { + void f() { struct Inner {}; Use ui; } + } F; +#if __cplusplus < 201103L + // expected-error@-2 {{unsupported: typedef changes linkage of anonymous type, but linkage was already computed}} + // expected-note@-5 {{use a tag name here}} +#endif +}