On Fri, 16 Jan 2026, LIU Hao wrote:
在 2026-1-15 22:16, Martin Storsjö 写道:
I did an one-off test with this, removing the special value handling:
https://github.com/mstorsjo/llvm-
project/commit/5045bfdef75e2be9fe465776ae6b8e880a4fc53a
With this change, some tests started failing in CI:
https://github.com/mstorsjo/llvm-project/actions/ runs/21033791422
In particular, this makes the following test cases fail:
Failed Tests (3):
llvm-libc++abi-mingw.cfg.in :: forced_unwind1.pass.cpp
llvm-libc++abi-mingw.cfg.in :: forced_unwind2.pass.cpp
llvm-libc++abi-mingw.cfg.in :: forced_unwind3.pass.cpp
The number 4 can be changed to `EXCEPTION_DISPOSITION(4)` or
`static_cast<EXCEPTION_DISPOSITION>(4)`.
That does fix the errors for returning this value, but it still doesn't
help with the case for the switch case:
/home/martin/code/llvm-mingw/llvm-project/libunwind/src/Unwind-seh.cpp:272:8:
error: case value is not a constant expression
272 | case EXCEPTION_DISPOSITION(4):
| ^~~~~~~~~~~~~~~~~~~~~~~~
/home/martin/code/llvm-mingw/llvm-project/libunwind/src/Unwind-seh.cpp:272:8:
error: case value is not a constant expression
272 | case static_cast<EXCEPTION_DISPOSITION>(4):
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Martin
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