I have some tests which are failing only on OpenBSD (and sometimes on MacOS which I assume is related) as follows: 

All 8 subtests passed 

Test Summary Report
-------------------
t/App/bif/sync.t (Wstat: 139 Tests: 8 Failed: 0)
  Non-zero wait status: 139

[download]

As you can see the tests are actually passing, but by shifting the non-zero wait status 139 by the appropriate values I get exit: 0 signal:11 core:128. usr/signum.h on OpenBSD says that signal 11 is SIGPIPE.

I installed $SIG{PIPE} handlers in my test script but that didn't change anything. Any ideas on where I should be looking to track down who/what is writing to a closed pipe?

In reply to Cause of failing tests on OpenBSD due to SIGPIPE? by mlawren

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