[clang] [Clang][AArch64] Diagnose invalid FPM scale arguments (PR #227722)

[via cfe-commits]

CarolineConcatto wrote:

So I think that problem may be that uint64_t is mapped to different types in stdint.h.

Clang’s target builtin uses the AArch64(/build/lib/clang/24/include/stdint.h) type: uint64_t == unsigned long
 but it looks like your  host (/usr/include/stdint.h) uses:  uint64_t == unsigned long long

>  __fpm 'fpm_t':'unsigned long long'

Can you check if this fix to you:

>  The solution is to compile with an AArch64 sysroot containing matching target libc headers, for example:
> 
>   build/bin/clang --target=aarch64-linux-gnu \
>     --sysroot=/path/to/aarch64-sysroot \
>     -c -o /dev/null -x c -
> 
>   The person should ensure the -H output selects stdint.h from that AArch64 sysroot rather than /usr/include.


https://github.com/llvm/llvm-project/pull/227722