Re: [PATCH v3 0/2] Small fixes for issues detected during internal CI runs

> I'm attempting to get the git test suite running automatically during our
> weekly import. I have this mostly working, including with Address Sanitizer
> and Memory Sanitizer, but ran into a few issues:
>
>  * several tests were failing due to strbuf_getcwd not clearing errno on
>    success after it internally looped due to the path being >128 bytes. This
>    is resolved in depth; though either one of the commits alone would
>    resolve our issues:
>    * modify locations that call strtoX and check for ERANGE to set errno =
>      0; prior to calling the conversion function. This is the typical way
>      that these functions are invoked, and may indicate that we want
>      compatibility helpers in git-compat-util.h to ensure that this happens
>      correctly (and add these functions to the banned list).
>    * have strbuf_getcwd set errno = 0; prior to a successful exit. This
>      isn't very common for most functions in the codebase, but some other
>      examples of this were found.
>  * t6421-merge-partial-clone.sh had >10% flakiness. This is due to our build
>    system using paths that contain a 64-hex-char hash, which had a 12.5%
>    chance of containing the substring d0.
>
> Kyle Lippincott (2):
>   set errno=0 before strtoX calls
>   t6421: fix test to work when repo dir contains d0