1 // RUN: %clang_cc1 -triple x86_64-unknown_unknown -emit-llvm -debug-info-kind=limited %s -O1 -fno-experimental-new-pass-manager -o - | FileCheck %s
2 
3 // Ensure class definitions are not emitted to debug info just because the
4 // vtable is emitted for optimization purposes (as available_externally). The
5 // class definition debug info should only go where the vtable is actually
6 // emitted into the object file.
7 
8 // CHECK: @_ZTV3foo = available_externally
9 
10 // Verify that this doesn't involve querying for the vtable of types that aren't
11 // dynamic (that would cause an assertion in the case below)
12 
13 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "bar<int>"
14 template <typename> struct bar {};
15 extern template struct bar<int>;
16 bar<int> *p1;
17 bar<int> a;
18 
19 // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "foo"
20 // CHECK-SAME: DIFlagFwdDecl
21 
22 struct foo {
23   virtual void f();
24 };
25 
26 foo f;
27