From close in perldoc (emphasis added):
If the filehandle came from a piped open, close returns false if one of the other syscalls involved fails or if its program exits with non-zero status. If the only problem was that the program exited non-zero, $! will be set to 0.
So, by setting your pipe program to exit 1 you are ensuring that close() fails (i.e., returns false). autodie is working correctly here.
how should I check for errors?
open(my $fh, '-|', 'bash -c "echo Hello; exit 1"');
die "Real pipe error: $!" if $!;
print "status: ", ($? >> 8), "\n";
Athanasius <°(((>< contra mundum
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