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#!./perl
# tests for "goto &sub"-ing into XSUBs
# Note: This only tests things that should *work*. At some point, it may
# be worth while to write some failure tests for things that should
# *break* (such as calls with wrong number of args). For now, I'm
# guessing that if all of these work correctly, the bad ones will
# break correctly as well.
BEGIN {
chdir 't' if -d 't';
require './test.pl';
# turn warnings into fatal errors
$SIG{__WARN__} = sub { die "WARNING: @_" } ;
set_up_inc('../lib');
skip_all_if_miniperl("no dynamic loading on miniperl, no Fcntl");
require Fcntl;
}
use strict;
use warnings;
my $VALID;
plan(tests => 11);
# We don't know what symbols are defined in platform X's system headers.
# We don't even want to guess, because some platform out there will
# likely do the unthinkable. However, Fcntl::S_IMODE(0)
# should always return a value.
# If this ceases to be the case, we're in trouble. =)
$VALID = 0;
### First, we check whether Fcntl::S_IMODE returns sane answers.
# Fcntl::S_IMODE(0) should always succeed.
my $value = Fcntl::S_IMODE($VALID);
isnt($value, undef, 'Sanity check broke, remaining tests will fail');
### OK, we're ready to do real tests.
sub goto_const { goto &Fcntl::S_IMODE; }
my $ret = goto_const($VALID);
is($ret, $value, 'goto &function_constant');
my $FNAME1 = 'Fcntl::S_IMODE';
sub goto_name1 { goto &$FNAME1; }
$ret = goto_name1($VALID);
is($ret, $value, 'goto &$function_package_and_name');
$ret = goto_name1($VALID);
is($ret, $value, 'goto &$function_package_and_name; again, with dirtier stack');
$ret = goto_name1($VALID);
is($ret, $value, 'goto &$function_package_and_name; again, with dirtier stack');
# test
package Fcntl;
my $FNAME2 = 'S_IMODE';
sub goto_name2 { goto &$FNAME2; }
package main;
$ret = Fcntl::goto_name2($VALID);
is($ret, $value, 'goto &$function_name; from local package');
my $FREF = \&Fcntl::S_IMODE;
sub goto_ref { goto &$FREF; }
$ret = goto_ref($VALID);
is($ret, $value, 'goto &$function_ref');
### tests where the args are not on stack but in GvAV(defgv) (ie, @_)
sub call_goto_const { &goto_const; }
$ret = call_goto_const($VALID);
is($ret, $value, 'goto &function_constant; from a sub called without arglist');
# test "goto &$function_package_and_name" from a sub called without arglist
sub call_goto_name1 { &goto_name1; }
$ret = call_goto_name1($VALID);
is($ret, $value,
'goto &$function_package_and_name; from a sub called without arglist');
sub call_goto_ref { &goto_ref; }
$ret = call_goto_ref($VALID);
is($ret, $value, 'goto &$function_ref; from a sub called without arglist');
BEGIN {
use Config;
if ($Config{extensions} =~ m{XS/APItest}) {
eval q[use XS::APItest qw(mycroak); 1]
or die "use XS::APItest: $@\n";
}
else {
*mycroak = sub { die @_ };
}
}
sub goto_croak { goto &mycroak }
{
my $e;
for (1..4) {
eval { goto_croak("boo$_\n") };
$e .= $@;
}
is($e, "boo1\nboo2\nboo3\nboo4\n",
'[perl #35878] croak in XS after goto segfaulted')
}
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