Another example is VIPUL/Crypt-Primes-0.50.tar.gz
All tests pass on both C:R 1.1902 and 1.2001 but with 1.2001 processing
after the last test goes into a CPU-intensive endless loop. So the
output of 'force test Crypt::Primes' looks like so with 1.2001:
cpan[6]> force test Crypt::Primes
Running test for module 'Crypt::Primes'
Running make for V/VI/VIPUL/Crypt-Primes-0.50.tar.gz
Has already been unwrapped into directory
/home/sand/.cpan/build/Crypt-Primes-0.50-V0orTP
Has already been made
Running make test
make[1]: Entering directory
`/home/sand/.cpan/build/Crypt-Primes-0.50-V0orTP'
PERL_DL_NONLAZY=1
/home/sand/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/bin/perl
"-MExtUtils::Command::MM" "-e" "test_harness(0, 'blib/lib',
'blib/arch')" t/*.t
t/genprime.t .......... ok
t/genprime_elgamal.t .. ok
t/intermediates.t ..... ok
All tests successful.
Files=3, Tests=28, 20 wallclock secs ( 0.24 usr 0.11 sys + 18.50 cusr
0.50 csys = 19.35 CPU)
Result: PASS
make[1]: Leaving directory `/home/sand/.cpan/build/Crypt-Primes-0.50-V0orTP'
(/usr/bin/make test exited with 0)
At this point the process 4739 is using 100% CPU. Stacktrace reports:
#
/home/sand/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/bin/perl-stacktrace
4739
[Thread debugging using libthread_db enabled]
0x00002af76bdaf471 in findentry (name=0x2af76be229ad "x", len=1,
ep1=<value optimized out>) at ../pari-2.1.7/src/language/anal.c:1943
1943 ../pari-2.1.7/src/language/anal.c: No such file or directory.
in ../pari-2.1.7/src/language/anal.c
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/CPAN/Reporter/PrereqCheck.pm:9
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/CPAN/Reporter/PrereqCheck.pm:52
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/CPAN/Reporter/PrereqCheck.pm:114
(eval 10):1
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/x86_64-linux-thread-multi-ld/Math/Pari.pm:0
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/x86_64-linux-thread-multi-ld/Math/Pari.pm:0
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/Crypt/Random.pm:20
What's going on here? What does PrereqCheck do in 1.2001 what it did not
do in 1.1902?
Of course when I repeat the request for a stack trace processing is
somewhere else:
/home/sand/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/bin/perl-stacktrace
4739
[Thread debugging using libthread_db enabled]
0x00002af76b75b370 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/CPAN/Reporter/PrereqCheck.pm:9
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/CPAN/Reporter/PrereqCheck.pm:52
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/CPAN/Reporter/PrereqCheck.pm:114
(eval 10):1
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/x86_64-linux-thread-multi-ld/Math/Pari.pm:0
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/x86_64-linux-thread-multi-ld/Math/Pari.pm:0
/home/src/perl/repoperls/installed-perls/perl/v5.15.1-201-g9840cde/2a56/lib/site_perl/5.15.1/Crypt/Random.pm:20
Looks like some XS is going wild.
