| Issue |
179090
|
| Summary |
[clang-tidy][false-positive] `performance-unnecessary-value-param` when passing `std::function` into `std::map::try_emplace`
|
| Labels |
clang-tidy,
false-positive
|
| Assignees |
|
| Reporter |
tearfur
|
clang-tidy warns `performance-unnecessary-value-param` when passing an `std::functional` rvalue into `std::map::try_emplace()`. `std::map::try_emplace()` will (in some cases) move from rvalues passed into it, so I think the warning is bogus.
https://godbolt.org/z/bjYqaP857
```
<source>:6:33: warning: the parameter 'f' of type 'std::function<void ()>' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param]
6 | void func(std::function<void()> f) {
| ^
| const &
1 warning generated.
```
Current trunk: 487de1ad7b11c9faad9b890b37e0dec44433fc04
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