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#!./perl
print "1..14\n";
# Tests bug #22977. Test case from Dave Mitchell.
sub f ($);
sub f ($) {
my $test = $_[0];
write;
format STDOUT =
ok @<<<<<<<
$test
.
}
f(1);
f(2);
# A bug caused by the fix for #22977/50528
sub foo {
sub bar {
# Fill the pad with alphabet soup, to give the closed-over variable a
# high padoffset (more likely to trigger the bug and crash).
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
my $x;
format STDOUT2 =
@<<<<<<
"ok 3".$x # $x is not available, but this should not crash
.
}
}
*STDOUT = *STDOUT2{FORMAT};
undef *bar;
write;
# A regression introduced in 5.10; format cloning would close over the
# variables in the currently-running sub (the main CV in this test) if the
# outer sub were an inactive closure.
sub baz {
my $a;
sub {
$a;
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t)}
my $x;
format STDOUT3 =
@<<<<<<<<<<<<<<<<<<<<<<<<<
defined $x ? "not ok 4 - $x" : "ok 4"
.
}
}
*STDOUT = *STDOUT3{FORMAT};
{
local $^W = 1;
my $w;
local $SIG{__WARN__} = sub { $w = shift };
write;
print "not " unless $w =~ /^Variable "\$x" is not available at/;
print "ok 5 - closure var not available when outer sub is inactive\n";
}
# Formats inside closures should close over the topmost clone of the outer
# sub on the call stack.
# Tests will be out of sequence if the wrong sub is used.
sub make_closure {
my $arg = shift;
sub {
shift == 0 and &$next(1), return;
my $x = "ok $arg";
format STDOUT4 =
@<<<<<<<
$x
.
sub { write }->(); # separate sub, so as not to rely on it being the
} # currently-running sub
}
*STDOUT = *STDOUT4{FORMAT};
$clo1 = make_closure 6;
$clo2 = make_closure 7;
$next = $clo1;
&$clo2(0);
$next = $clo2;
&$clo1(0);
# Cloning a format whose outside has been undefined
sub x {
{my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$t,$u)}
my $z;
format STDOUT6 =
@<<<<<<<<<<<<<<<<<<<<<<<<<
defined $z ? "not ok 8 - $z" : "ok 8"
.
}
undef &x;
*STDOUT = *STDOUT6{FORMAT};
{
local $^W = 1;
my $w;
local $SIG{__WARN__} = sub { $w = shift };
write;
print "not " unless $w =~ /^Variable "\$z" is not available at/;
print "ok 9 - closure var not available when outer sub is undefined\n";
}
format STDOUT7 =
@<<<<<<<<<<<<<<<<<<<<<<<<<<<
do { my $x = "ok 10 - closure inside format"; sub { $x }->() }
.
*STDOUT = *STDOUT7{FORMAT};
write;
$testn = 12;
format STDOUT8 =
@<<<< - recursive formats
do { my $t = "ok " . $testn--; write if $t =~ 12; $t}
.
*STDOUT = *STDOUT8{FORMAT};
write;
sub _13 {
my $x;
format STDOUT13 =
@* - formats closing over redefined subs
ref \$x eq 'SCALAR' ? "ok 13" : "not ok 13";
.
}
undef &_13;
eval 'sub _13 { my @x; write }';
*STDOUT = *STDOUT13{FORMAT};
_13();
# This is a variation of bug #22977, which crashes or fails an assertion
# up to 5.16.
# Keep this test last if you want test numbers to be sane.
BEGIN { \&END }
END {
my $test = "ok 14";
*STDOUT = *STDOUT5{FORMAT};
write;
format STDOUT5 =
@<<<<<<<
$test
.
}