| Issue |
136607
|
| Summary |
std::generator usage with Clang causes warning/error when compiling HPX with C++23 and coroutines enabled
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
Prachethan7
|
I'm encountering a compiler warning (treated as error) when compiling [HPX](https://github.com/STEllAR-GROUP/hpx) with -std=c++23 and coroutine support using Clang 17.0.6.
The error is related to the usage of std::generator and seems to stem from header processing logic.
```
cmake .. \
-DHPX_DIR=/home/neo/packages/hpx/install/lib/cmake/HPX \
-DHPX_WITH_CXX_STANDARD=23 \
-DHPX_HAVE_CXX23_STD_GENERATOR=ON \
-DHPX_WITH_CXX20_COROUTINES=ON
cmake --build . --target tests
```
Clang version:
```
Debian clang version 19.1.7 (3)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-19/bin
```
The error disappears when adding a missing ;, but this raises a concern: the warning may indicate a deeper issue in how std::generator is parsed or supported.
Would it be possible to:
Confirm whether this is an expected behavior?
Clarify support status for std::generator with Clang 17?
Possibly improve diagnostic feedback or preprocessor logic?
[compiler_crash.log](https://github.com/user-attachments/files/19840012/compiler_crash.log)
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