| Issue |
147000
|
| Summary |
[Clang] Duplicate diagnostics in C++20+ mode: incomplete type in nested name specifier
|
| Labels |
clang:diagnostics
|
| Assignees |
|
| Reporter |
zwuis
|
Clang emits duplicate diagnostics when compiling the following code in C++20+ mode:
```cpp
struct incomplete;
incomplete::type var;
```
Output:
```txt
<source>:2:1: error: incomplete type 'incomplete' named in nested name specifier
2 | incomplete::type var;
| ^~~~~~~~~~~~
<source>:1:8: note: forward declaration of 'incomplete'
1 | struct incomplete;
| ^
<source>:2:1: error: incomplete type 'incomplete' named in nested name specifier
2 | incomplete::type var;
| ^~~~~~~~~~~~
<source>:1:8: note: forward declaration of 'incomplete'
1 | struct incomplete;
| ^
```
Compiler Explorer: https://godbolt.org/z/fPo1W7c1n
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