| Issue |
98199
|
| Summary |
missing diagnostic for reopening an ambiguous namespace
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
zygoloid
|
```c++
namespace internal {
void Bar() {}
} // namespace internal
inline namespace stay_away {
namespace internal {} // namespace internal
} // namespace stay_away
namespace internal {
void Bar() {}
}
```
The final reopening of namespace `internal` should be invalid: lookup for the name `internal` is ambiguous. But clang accepts this and instead creates a second `::internal` namespace (a third `internal` namespace overall), and treats the two `Bar`s as being unrelated. (Ultimately this fails in IR generation due to a mangled name collision.)
Presumably we're incorrectly suppressing diagnostics in the lookup for the name `internal`.
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