49 lines
1.3 KiB
Perl
49 lines
1.3 KiB
Perl
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#!./perl
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BEGIN {
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chdir 't' if -d 't';
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require "./test.pl";
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set_up_inc('../lib');
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}
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if ($^O eq 'dos') {
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skip_all("no multitasking");
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}
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plan tests => 3;
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watchdog(10, $^O eq 'MSWin32' ? "alarm" : '');
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use Config;
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$| = 1;
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$SIG{PIPE} = 'IGNORE';
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# work around a shell set to ignore HUP
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$SIG{HUP} = 'DEFAULT';
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$SIG{HUP} = 'IGNORE' if $^O eq 'interix';
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my $perl = which_perl();
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my $killsig = 'HUP';
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$killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/;
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SKIP:
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{
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skip("Not relevant to $^O", 3)
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if $^O eq "MSWin32" || $^O eq "VMS";
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skip("only matters for waitpid or wait4", 3)
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unless $Config{d_waitpid} || $Config{d_wait4};
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# [perl #119893]
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# close on the original of a popen handle dupped to a standard handle
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# would wait4pid(0, ...)
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open my $savein, "<&", \*STDIN;
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my $pid = open my $fh1, "-|", $perl, "-e", "sleep 50";
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ok($pid, "open a pipe");
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# at this point PL_fdpids[fileno($fh1)] is the pid of the new process
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ok(open(STDIN, "<&=", $fh1), "dup the pipe");
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# now PL_fdpids[fileno($fh1)] is zero and PL_fdpids[0] is
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# the pid of the process created above, previously this would block
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# internally on waitpid(0, ...)
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ok(close($fh1), "close the original");
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kill $killsig, $pid;
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open STDIN, "<&", $savein;
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}
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