Bug#851642: perl: FTBFS on mips64el: dist/threads/t/join.t failure

[Niko Tyni <ntyni@debian.org>]

Package: perl
Version: 5.24.1-1
Severity: serious
X-Debbugs-Cc: debian-mips@lists.debian.org

This package failed to build on mips64el:

 dist/threads/t/join ........................................... Died at t/join.t line 134.
 FAILED--expected 20 tests, saw 10

This has now happened twice on different buildds so it doesn't seem to be transient.

 https://buildd.debian.org/status/logs.php?pkg=perl&arch=mips64el

5.24.1~rc5-1 built fine in experimental a couple of weeks ago, and there
were no thread-related source changes between the versions (and a minimal
set of changes overall as the debian/cross/ ones don't affect native
builds).

So either something changed in the toolchain / platform or this was a
latent undeterministic bug and we're just unlucky now.

Needs investigation. Cc'ing the mips porters; any help would be welcome.
-- 
Niko Tyni   ntyni@debian.org