On Wed Dec 14 07:35:12 2011, patrik.h.hagglund@ericsson.com wrote: > > Filehandle duplication 'open(STDOUT, '>&', $tmph)', and 'close($tmph)' > sometimes > hang in child (forked) processes, when threads are used in the top- > level process. > A test program is included below (a skeleton of a program used as a > test execution > driver). Run the program, and see the hangs using 'watch pstree'. I can reproduce the hang, but when I run it under gdb it never gets that far. I get this instead: Program received signal EXC_SOFTWARE, Software generated exception. [Switching to process 86000] 0x98e6b1d6 in __wait4 () I have no idea what that means. The backtrace is: (gdb) bt #0 0x98e6b1d6 in __wait4 () #1 0x98e6b1c9 in waitpid$UNIX2003 () #2 0x000d8016 in Perl_wait4pid (my_perl=0x92b200, pid=89663, statusp=0xb0102d0c, flags=0) at util.c:3326 #3 0x001a1b07 in Perl_pp_waitpid (my_perl=0x92b200) at pp_sys.c:4090 #4 0x000c9de9 in Perl_runops_debug (my_perl=0x92b200) at dump.c:2119 #5 0x0002c8a2 in Perl_call_sv (my_perl=0x92b200, sv=0x18c1770, flags=9) at perl.c:2695 #6 0x002d458b in S_ithread_run (arg=0x55af50) at threads.xs:517 #7 0x98e3785d in _pthread_start () #8 0x98e376e2 in thread_start () -- Father Chrysostomos --- via perlbug: queue: perl5 status: new https://rt.perl.org:443/rt3/Ticket/Display.html?id=106212Thread Next