Package: libio-pty-easy-perl Version: 0.09-1 Severity: normal Forwarded: https://rt.cpan.org/Public/Bug/Display.html?id=95702 User: debian-p...@lists.debian.org Usertags: autopkgtest
Test 3 in t/read-write.t occasionally fails on ci.debian.net. See https://ci.debian.net/packages/libi/libio-pty-easy-perl/unstable/amd64/ I can reproduce this by running the test in a loop and adding other load to the system. It could make the build fail, although the reproducible.debian.net system hasn't seen that yet. The test writes a large (1M) string to a subprocess that doesn't consume any input. This write is presumably expected to block. The test then sets up a timed alarm (1s) with a handler that immediately tries to write even more. The second write is expected to fail, but it sometimes succeeds, causing a test failure. Looking at strace output for the test failure, the select() call in IO::PTY::Easy::write() indeed returns immediately indicating that the write FD is ready for writing. The number of bytes written when the alarm signal arrives is a bit less than for the "normal" case, 11776 vs. 13824, but giving the syswrite() more time doesn't make the bug go away. Given the next test is a related TODO test for write timeouts, I'd say this is not worth the trouble. I'm inclined to just disable the test. This is also [rt.cpan.org #95702], and there's plenty of failure reports on CPAN testers. -- Niko Tyni nt...@debian.org