| 1 | // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -debug-info-kind=limited -emit-llvm -o - | FileCheck %s |
|---|
| 2 | // This test is for a crash when emitting debug info for not-yet-completed |
|---|
| 3 | // types. |
|---|
| 4 | // Test that we don't actually emit a forward decl for the offending class: |
|---|
| 5 | // CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Derived<int>" |
|---|
| 6 | // CHECK-NOT: DIFlagFwdDecl |
|---|
| 7 | // CHECK-SAME: ){{$}} |
|---|
| 8 | // rdar://problem/15931354 |
|---|
| 9 | template <class A> class Derived; |
|---|
| 10 | |
|---|
| 11 | template <class A> class Base { |
|---|
| 12 | static Derived<A> *create(); |
|---|
| 13 | }; |
|---|
| 14 | |
|---|
| 15 | template <class A> struct Derived : Base<A> { |
|---|
| 16 | }; |
|---|
| 17 | |
|---|
| 18 | Base<int> *f; |
|---|
| 19 | |
|---|
| 20 | // During the instantiation of Derived<int>, Base<int> becomes required to be |
|---|
| 21 | // complete - since the declaration has already been emitted (due to 'f', |
|---|
| 22 | // above), we immediately try to build debug info for Base<int> which then |
|---|
| 23 | // requires the (incomplete definition) of Derived<int> which is problematic. |
|---|
| 24 | // |
|---|
| 25 | // (if 'f' is not present, the point at which Base<int> becomes required to be |
|---|
| 26 | // complete during the instantiation of Derived<int> is a no-op because |
|---|
| 27 | // Base<int> was never emitted so we ignore it and carry on until we |
|---|
| 28 | // wire up the base class of Derived<int> in the debug info later on) |
|---|
| 29 | Derived<int> d; |
|---|
| 30 | |
|---|