| Issue |
185472
|
| Summary |
clang-x64 windows-msvc /adcintrin.h/adxintrin.h error: constexpr declaration of '_addcarry_u32'/'_subborrow_u32'/'_addcarry_u64'/'_subborrow_u64'/'_addcarryx_u32'/'_addcarryx_u64' follows non-constexpr declaration
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
marakew
|
```
In file included from D:/msvc/VC/Tools/MSVC/14.51.36014/include\string:10:
In file included from D:/msvc/VC/Tools/MSVC/14.51.36014/include\xstring:11:
In file included from D:/msvc/VC/Tools/MSVC/14.51.36014/include\__msvc_string_view.hpp:12:
In file included from D:/msvc/VC/Tools/MSVC/14.51.36014/include\iosfwd:13:
In file included from D:/msvc/VC/Tools/MSVC/14.51.36014/include\cwchar:12:
In file included from D:/msvc/Windows Kits/10/Include/10.0.26100.0/ucrt\wchar.h:29:
In file included from D:/LLVM-22.1.0-win64/lib/clang/22/include\intrin.h:18:
In file included from D:/LLVM-22.1.0-win64/lib/clang/22/include\intrin0.h:19:
D:/LLVM-22.1.0-win64/lib/clang/22/include\adcintrin.h:59:43: error: constexpr declaration of '_addcarry_u32' follows non-constexpr declaration
59 | __INLINE unsigned char __DEFAULT_FN_ATTRS _addcarry_u32(unsigned char __cf,
| ^
D:\msvc\VC\Tools\MSVC\14.51.36014\include\intrin.h:928:32: note: previous declaration is here
928 | __MACHINEX86_X64(unsigned char _addcarry_u32(unsigned char, unsigned int, unsigned int, unsigned int *))
| ^
```
the same errors for all functions in [adcintrin.h](https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/adcintrin.h) and [adxintrin.h](https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/adxintrin.h)
so this functions '_addcarry_u32'/'_subborrow_u32'/'_addcarry_u64'/'_subborrow_u64'/ '_addcarryx_u32'/'_addcarryx_u64' should move as builtin to avoid MSVC conflicts
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