Re: tests/ls/stat-free-colors.sh broken with glibc-2.22

[Pádraig Brady]

On 03/09/15 22:21, Roland McGrath wrote:
> That libc change was intended to be a pure refactoring and should not have
> changed the behavior at all.  That it caused the extra stat is a bug (it's
> a simple inverted test typo).
> 
> This is in the grey area of whether the bug was "user-visible", but a
> performance regression that bubbles up to perceptibility seems like it
> qualifies.  So please file a bug at https://sourceware.org/bugzilla
> (you can assign it directly to address@hidden).

https://sourceware.org/bugzilla/show_bug.cgi?id=18921

> Unfortunately, I can't think of a way to write a real regression test for
> this in the libc test suite.  We don't really do "external" things like
> use strace to determine if a test passes.

There would probably need to be some mocking infrastructure
in place to record and match API calls.  Much easier in
a language like python with built in introspection etc.

thanks Roland!
Pádraig.