| Issue |
134549
|
| Summary |
DebugInfo: preferred_name causes DIDerivedType node to be emitted twice
|
| Labels |
debuginfo
|
| Assignees |
|
| Reporter |
mizvekov
|
This is a problem isolated from one of our own test cases: `clang/test/CodeGen/preferred_name.cpp`
The test expectation captures this, but there is no acknowledgement the bug exists.
Reduced repro: https://godbolt.org/z/dn9hs87ev
```C++
template <class T> struct Foo;
template <class T> using Bar = Foo<T>;
template <class T>
struct [[clang::preferred_name(Bar<short>)]] Foo {};
Bar<short> barShort;
```
Reduced output:
```
!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "Bar<short>", file: !5, line: 2, baseType: !7)
!7 = !DIDerivedType(tag: DW_TAG_typedef, name: "Bar<short>", file: !5, line: 2, baseType: !8)
```
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