Bug #13889 for forks: forks seems broke system() call

Wed Jul 27 09:24:40 2005 Guest - Ticket created

Subject:

forks seems broke system() call

Here come a very simple script which works perfectly. Remove the # before forks, the system command is executed but return -1 :( Any of you ever see that before ? #!/usr/bin/perl #use forks; system("ls >/dev/null 2>&1")==0 or print $?; Running on perl v5.8.6 Regards, Erwan

Thu Dec 08 18:23:31 2005 RYBSKEJ [...] cpan.org - Correspondence added

Can you download and install forks 0.18 and see if this problem persists? If it does, please attach your perl configuration (perl -V) in your response. -Eric [guest - Wed Jul 27 09:24:40 2005]: Show quoted text

> Here come a very simple script which works perfectly. Remove the # > before forks, the system command is executed but return -1 :( > > Any of you ever see that before ? > > #!/usr/bin/perl > #use forks; > system("ls >/dev/null 2>&1")==0 or print $?; > > > Running on perl v5.8.6 > > Regards, > Erwan

Fri Dec 09 04:13:08 2005 Guest - Correspondence added

[RYBSKEJ - Thu Dec 8 18:23:31 2005]: Show quoted text

> Can you download and install forks 0.18 and see if this problem > persists? If it does, please attach your perl configuration (perl -V) > in your response.

I've recompiled perl-forks 0.18 on my perl 5.8.7 and it still works the same. When "use forks" the system call return -1. Erwan,

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Sun May 21 23:23:06 2006 RYBSKEJ [...] cpan.org - Correspondence added

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liz [...] dijkmat.nl

This issue is caused by how the host system supports $SIG{CHLD} = 'IGNORE'. Many systems will trap the exit code of the child and return them to the parent perl process during auto-reaping, but some return -1. forks 0.19 includes a patch that directly addresses this issue and hopefully makes the system() call work again across all platforms on which forks module is used.

Sun May 21 23:23:07 2006 The RT System itself - Status changed from 'new' to 'open'

Sun May 21 23:23:10 2006 RYBSKEJ [...] cpan.org - Status changed from 'open' to 'resolved'

Sun May 21 23:23:13 2006 RYBSKEJ [...] cpan.org - Given to RYBSKEJ