[PATCH 5/5] posix: Sync fnmatch with gnulib

[Paul Eggert]

On 12/30/20 12:15 PM, Adhemerval Zanella wrote:

> -  ssize_t level;
> +  size_t level;

'level' should be ptrdiff_t not ssize_t, for portability to 
(now-ancient, but still allowed by POSIX) hosts where ssize_t is 32 bits 
and size_t is 64 bits.

> -    CHAR str[];
> +    CHAR str[FLEXIBLE_ARRAY_MEMBER];

This assumes C99 flex array members which is fine for glibc but dubious 
for Gnulib; it should be safer to use __flexarr.

> Because otherwise it triggers some glibc regressions:

Thanks for spotting that. I installed the attached patch into Gnulib, 
which should fix the glibc regressions and the other abovementioned 
glitches, so that you should now be able to sync fnmatch from Gnulib 
unchanged.
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