PARI/GP 2.17.2 testsuite hangs nondeterministically (macOS)

Matthias Koeppe <[email protected]> Fri, 17 Oct 2025 15:18:35 -0700
Newsgroups gmane.comp.mathematics.pari.user
Message-ID <CAJ_wo5gerNb2e8uPo9TUseafELpEZz4wgW+9FkoyHdwO5cLgwQ@mail.gmail.com>
I am encountering nondeterministic hangs of PARI/GP while running its
testsuite on macOS. It seems to happen in particular in higher CPU
load situations.
The hang appears to be a pthread deadlock. In both of the tests that I
have seen affected by it (bnf, ellrank), the backtrace shows
"ZM_gauss", via "gen_inccrt_i". More detail:
https://github.com/passagemath/passagemath/issues/1684

Matthias
-- 
Matthias Koeppe -- http://www.math.ucdavis.edu/~mkoeppe