[Bug sanitizer/59009] libsanitizer merge from upstream r191666 breaks bootstrap on powerpc64-linux

[jiwang at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59009

Jiong Wang <jiwang at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jiwang at gcc dot gnu.org

--- Comment #46 from Jiong Wang <jiwang at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #44)
> (In reply to Sandra Loosemore from comment #43)
> > I'm seeing the same errors as in Comment 8 (complaints about arrays with
> > negative sizes) when building a cross for aarch64-linux-gnu from mainline
> > head.  I'm confused about the status of this issue -- is there an
> > uncommitted patch out there somewhere?
> 
> Yes there is a missing patch for aarch64 with the later kernel header files.

the bootstrap failure on aarch64 is caused by type mismatch.

in libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

__kernel_old_uid_t should be unsigned int on aarch64, while it's defined as
"unsigned short" thus triggered the assertion failure.