Bug#714526: still an issue - makes callers hang

[Peter Palfrader <weasel@debian.org>]

Control: severity -1 normal

Hi,

this is still a problem on jessie with for instance buildd.  Consider this
simple perl script:

  #!/usr/bin/perl

  use strict;
  use warnings;

  my $pipe;
  my $pid = open($pipe, "-|");

  die "$pipe failed: $!" unless defined $pipe;

  if ($pid == 0) {
    open(STDERR, '>&', \*STDOUT);
    exec qw{ssh wb-buildd@buildd.debian.org moo};
    exit
  };

  print while (<$pipe>);
  close $pipe;
  print "done.\n";

If ssh wb-buildd@buildd.debian.org launches a control master, this script will
never terminate.

Cheers,
weasel
-- 
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