alexfh wrote:
Some code from NCCL
(https://github.com/NVIDIA/nccl/blob/master/src/graph/xml.cc#L16) started
failing to compile after this patch. A standalone test
(https://gcc.godbolt.org/z/n1dbEGr1M):
```
#if defined(__x86_64__)
#include <cpuid.h>
#endif
```
This started producing the following error:
```
/opt/compiler-explorer/clang-trunk-20250807/lib/clang/22/include/cpuid.h:348:22:
error: static declaration of '__cpuidex' follows non-static declaration
348 | static __inline void __cpuidex(int __cpu_info[4], int __leaf, int
__subleaf) {
| ^
/opt/compiler-explorer/clang-trunk-20250807/lib/clang/22/include/cpuid.h:348:22:
note: '__cpuidex' is a builtin with type 'void (int *, int, int) noexcept'
```
https://github.com/llvm/llvm-project/pull/126324
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