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#!./perl
# Minimally test if dump() behaves as expected
BEGIN {
chdir 't' if -d 't';
require './test.pl';
set_up_inc( qw(. ../lib) );
skip_all_if_miniperl();
}
use Config;
use File::Temp qw(tempdir);
use Cwd qw(getcwd);
use File::Spec;
skip_all("only tested on devel builds")
unless $Config{usedevel};
# there may be other operating systems where it makes sense, but
# there are some where it isn't, so limit the platforms we test
# this on. Also this needs to be a platform that fully supports
# fork() and waitpid().
skip_all("no point in dumping on $^O")
unless $^O =~ /^(linux|.*bsd|solaris|darwin)$/;
skip_all("avoid coredump under ASan")
if $Config{ccflags} =~ /-fsanitize=/;
# execute in a work directory so File::Temp can clean up core dumps
my $tmp = tempdir(CLEANUP => 1);
my $start = getcwd;
# on systems which don't make $^X absolute which_perl() in test.pl won't
# return an absolute path, so once we change directories it can't
# find ./perl, resulting in test failures
$^X = File::Spec->rel2abs($^X);
chdir $tmp
or skip_all("Cannot chdir to work directory");
plan(2);
# Depending on how perl is built, there may be extraneous stuff on stderr
# such as "Aborted", which isn't caught by the '2>&1' that
# fresh_perl_like() does. So execute each CORE::dump() in a sub-process.
#
# In detail:
# fresh_perl_like() ends up doing a `` which invokes a shell with 2 args:
#
# "sh", "-c", "perl /tmp/foo 2>&1"
#
# When the perl process coredumps after calling CORE::dump(), the parent
# sh sees that the exit of the child flags a coredump and so prints
# something like the following to stderr:
#
# sh: line 1: 17605 Aborted (core dumped)
#
# Note that the '2>&1' only applies to the perl process, not to the sh
# command itself.
# By do the dump in a child, the parent perl process exits back to sh with
# a normal exit value, so sh won't complain.
# An unqualified dump() will give a deprecation warning. Usually, we'd
# do a "no warnings 'deprecated'" to shut this off, but since we have
# chdirred to /tmp, a 'no' won't find the pragma. Hence the fiddling with
# $SIG{__WARN__}.
fresh_perl_like(<<'PROG', qr/\AA(?!B\z)/, {}, "plain dump quits");
BEGIN {$SIG {__WARN__} = sub {1;}}
++$|;
my $pid = fork;
die "fork: $!\n" unless defined $pid;
if ($pid) {
# parent
waitpid($pid, 0);
}
else {
# child
print qq(A);
CORE::dump;
print qq(B);
}
PROG
fresh_perl_like(<<'PROG', qr/A(?!B\z)/, {}, "CORE::dump with label quits"); BEGIN {$SIG {__WARN__} = sub {1;}}
++$|;
my $pid = fork;
die "fork: $!\n" unless defined $pid;
if ($pid) {
# parent
waitpid($pid, 0);
}
else {
print qq(A);
CORE::dump foo;
foo:
print qq(B);
}
PROG
END {
chdir $start if defined $start;
}
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