| Issue |
134980
|
| Summary |
[clang] Using std::complex suppresses warnings from -Whigher-precision-for-complex-division
|
| Labels |
clang:diagnostics,
false-negative
|
| Assignees |
|
| Reporter |
Maetveis
|
The `-Whigher-precision-for-complex-division` emitted when `-fcomplex-arithmetic=promoted` option is used and the target does not support a higher precison type is not emitted:
- for C++ `std::complex` divisions (instead of C `_Complex`)
- when including `<complex>` from libstdc++ (after https://github.com/llvm/llvm-project/pull/131477)
- when including `<complex>` from libc++ and instantiating the templated std::complex division. ([Compiler explorer link](https://godbolt.org/z/EenxbcKdP))
libstdc++ does not suppress the warning before https://github.com/llvm/llvm-project/pull/131477 because its using `/=` which is fixed by https://github.com/llvm/llvm-project/pull/131477
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