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#!perl
# Test scoping issues with embedded code in regexps.
BEGIN {
chdir 't';
@INC = qw(lib ../lib);
require './test.pl';
}
plan 48;
fresh_perl_is <<'CODE', '781745', {}, '(?{}) has its own lexical scope';
my $x = 7; my $a = 4; my $b = 5;
print "a" =~ /(?{ print $x; my $x = 8; print $x; my $y })a/;
print $x,$a,$b;
CODE
fresh_perl_is <<'CODE',
for my $x("a".."c") {
$y = 1;
print scalar
"abcabc" =~
/
(
a (?{ print $y; local $y = $y+1; print $x; my $x = 8; print $x })
b (?{ print $y; local $y = $y+1; print $x; my $x = 9; print $x })
c (?{ print $y; local $y = $y+1; print $x; my $x = 10; print $x })
){2}
/x;
print "$x ";
}
CODE
'1a82a93a104a85a96a101a 1b82b93b104b85b96b101b 1c82c93c104c85c96c101c ',
{},
'multiple (?{})s in loop with lexicals';
fresh_perl_is <<'CODE', '781745', {}, 'run-time re-eval has its own scope';
use re qw(eval);
my $x = 7; my $a = 4; my $b = 5;
my $rest = 'a';
print "a" =~ /(?{ print $x; my $x = 8; print $x; my $y })$rest/;
print $x,$a,$b;
CODE
fresh_perl_is <<'CODE', '178279371047857967101745', {},
use re "eval";
my $x = 7; $y = 1;
my $a = 4; my $b = 5;
print scalar
"abcabc"
=~ ${\'(?x)
(
a (?{ print $y; local $y = $y+1; print $x; my $x = 8; print $x })
b (?{ print $y; local $y = $y+1; print $x; my $x = 9; print $x })
c (?{ print $y; local $y = $y+1; print $x; my $x = 10; print $x })
){2}
'};
print $x,$a,$b
CODE
'multiple (?{})s in "foo" =~ $string';
fresh_perl_is <<'CODE', '178279371047857967101745', {},
use re "eval";
my $x = 7; $y = 1;
my $a = 4; my $b = 5;
print scalar
"abcabc" =~
/${\'
(
a (?{ print $y; local $y = $y+1; print $x; my $x = 8; print $x })
b (?{ print $y; local $y = $y+1; print $x; my $x = 9; print $x })
c (?{ print $y; local $y = $y+1; print $x; my $x = 10; print $x })
){2}
'}/x;
print $x,$a,$b
CODE
'multiple (?{})s in "foo" =~ /$string/x';
fresh_perl_is <<'CODE', '123123', {},
for my $x(1..3) {
push @regexps, qr/(?{ print $x })a/;
}
"a" =~ $_ for @regexps;
"ba" =~ /b$_/ for @regexps;
CODE
'qr/(?{})/ is a closure';
"a" =~ do { package foo; qr/(?{ $::pack = __PACKAGE__ })a/ };
is $pack, 'foo', 'qr// inherits package';
"a" =~ do { use re "/x"; qr/(?{ $::re = qr-- })a/ };
is $re, '(?^x:)', 'qr// inherits pragmata';
$::pack = '';
"ba" =~ /b${\do { package baz; qr|(?{ $::pack = __PACKAGE__ })a| }}/;
is $pack, 'baz', '/text$qr/ inherits package';
"ba" =~ m+b${\do { use re "/i"; qr|(?{ $::re = qr-- })a| }}+;
is $re, '(?^i:)', '/text$qr/ inherits pragmata';
{
use re 'eval';
package bar;
"ba" =~ /${\'(?{ $::pack = __PACKAGE__ })a'}/;
}
is $pack, 'bar', '/$text/ containing (?{}) inherits package';
{
use re 'eval', "/m";
"ba" =~ /${\'(?{ $::re = qr -- })a'}/;
}
is $re, '(?^m:)', '/$text/ containing (?{}) inherits pragmata';
fresh_perl_is <<'CODE', '45', { stderr => 1 }, '(?{die})';
my $a=4; my $b=5; eval { "a" =~ /(?{die})a/ }; print $a,$b;
CODE
fresh_perl_is <<'CODE', 'Y45', { stderr => 1 }, '(?{eval{die}})';
my $a=4; my $b=5;
"a" =~ /(?{eval { die; print "X" }; print "Y"; })a/; print $a,$b;
CODE
fresh_perl_is <<'CODE',
my $a=4; my $b=5;
sub f { "a" =~ /(?{print((caller(0))[3], "\n");})a/ };
f();
print $a,$b;
CODE
"main::f\n45",
{ stderr => 1 }, 'sub f {(?{caller})}';
fresh_perl_is <<'CODE',
my $a=4; my $b=5;
sub f { print ((caller(0))[3], "-", (caller(1))[3], "-\n") };
"a" =~ /(?{f()})a/;
print $a,$b;
CODE
"main::f--\n45",
{ stderr => 1 }, 'sub f {caller} /(?{f()})/';
fresh_perl_is <<'CODE',
my $a=4; my $b=5;
sub f {
"a" =~ /(?{print "X"; return; print "Y"; })a/;
print "Z";
};
f();
print $a,$b;
CODE
"XZ45",
{ stderr => 1 }, 'sub f {(?{return})}';
fresh_perl_is <<'CODE',
my $a=4; my $b=5; "a" =~ /(?{last})a/; print $a,$b
CODE
q{Can't "last" outside a loop block at - line 1.},
{ stderr => 1 }, '(?{last})';
fresh_perl_is <<'CODE',
my $a=4; my $b=5; "a" =~ /(?{for (1..4) {last}})a/; print $a,$b
CODE
'45',
{ stderr => 1 }, '(?{for {last}})';
fresh_perl_is <<'CODE',
for (1) { my $a=4; my $b=5; "a" =~ /(?{last})a/ }; print $a,$b
CODE
q{Can't "last" outside a loop block at - line 1.},
{ stderr => 1 }, 'for (1) {(?{last})}';
fresh_perl_is <<'CODE',
my $a=4; my $b=5; eval { "a" =~ /(?{last})a/ }; print $a,$b
CODE
'45',
{ stderr => 1 }, 'eval {(?{last})}';
fresh_perl_is <<'CODE',
my $a=4; my $b=5; "a" =~ /(?{next})a/; print $a,$b
CODE
q{Can't "next" outside a loop block at - line 1.},
{ stderr => 1 }, '(?{next})';
fresh_perl_is <<'CODE',
my $a=4; my $b=5; "a" =~ /(?{for (1,2,3) { next} })a/; print $a,$b
CODE
'45',
{ stderr => 1 }, '(?{for {next}})';
fresh_perl_is <<'CODE',
for (1) { my $a=4; my $b=5; "a" =~ /(?{next})a/ }; print $a,$b
CODE
q{Can't "next" outside a loop block at - line 1.},
{ stderr => 1 }, 'for (1) {(?{next})}';
fresh_perl_is <<'CODE',
my $a=4; my $b=5; eval { "a" =~ /(?{next})a/ }; print $a,$b
CODE
'45',
{ stderr => 1 }, 'eval {(?{next})}';
fresh_perl_is <<'CODE',
my $a=4; my $b=5;
"a" =~ /(?{ goto FOO; print "X"; })a/;
print "Y";
FOO:
print $a,$b
CODE
q{Can't "goto" out of a pseudo block at - line 2.},
{ stderr => 1 }, '{(?{goto})}';
{
local $::TODO = "goto doesn't yet work in pseduo blocks";
fresh_perl_is <<'CODE',
my $a=4; my $b=5;
"a" =~ /(?{ goto FOO; print "X"; FOO: print "Y"; })a/;
print "Z";
FOO;
print $a,$b
CODE
"YZ45",
{ stderr => 1 }, '{(?{goto FOO; FOO:})}';
}
# [perl #3590]
fresh_perl_is <<'CODE', '', { stderr => 1 }, '(?{eval{die}})';
"$_$_$_"; my $foo; # these consume pad entries and ensure a SEGV on opd perls
"" =~ m{(?{exit(0)})};
CODE
# [perl #92256]
{ my $y = "a"; $y =~ /a(?{ undef *_ })/ }
pass "undef *_ in a re-eval does not cause a double free";
# make sure regexp warnings are reported on the right line
# (we don't care what warning; the 32768 limit is just one
# that was easy to reproduce) */
{
use warnings;
my $w;
local $SIG{__WARN__} = sub { $w = "@_" };
my $qr = qr/(??{'a'})/;
my $filler = 1;
("a" x 40_000) =~ /^$qr(ab*)+/; my $line = __LINE__;
like($w, qr/recursion limit.* line $line\b/, "warning on right line");
}
# on immediate exit from pattern with code blocks, make sure PL_curcop is
# restored
{
use re 'eval';
my $c = '(?{"1"})';
my $w = '';
my $l;
local $SIG{__WARN__} = sub { $w .= "@_" };
$l = __LINE__; "1" =~ /^1$c/x and warn "foo";
like($w, qr/foo.+line $l/, 'curcop 1');
$w = '';
$l = __LINE__; "4" =~ /^1$c/x or warn "foo";
like($w, qr/foo.+line $l/, 'curcop 2');
$c = '(??{"1"})';
$l = __LINE__; "1" =~ /^$c/x and warn "foo";
like($w, qr/foo.+line $l/, 'curcop 3');
$w = '';
$l = __LINE__; "4" =~ /^$c/x or warn "foo";
like($w, qr/foo.+line $l/, 'curcop 4');
}
# [perl #113928] caller behaving unexpectedly in re-evals
#
# /(?{...})/ should be in the same caller scope as the surrounding code;
# qr/(?{...})/ should be in an anon sub
{
my $l;
sub callers {
my @c;
my $stack = '';
my $i = 1;
while (@c = caller($i++)) {
$stack .= "($c[3]:" . ($c[2] - $l) . ')';
}
$stack;
}
$l = __LINE__;
my $c;
is (callers(), '', 'callers() null');
"" =~ /(?{ $c = callers() })/;
is ($c, '', 'callers() //');
$l = __LINE__;
sub m1 { "" =~ /(?{ $c = callers() })/; }
m1();
is ($c, '(main::m1:2)', 'callers() m1');
$l = __LINE__;
my $r1 = qr/(?{ $c = callers() })/;
"" =~ /$r1/;
is ($c, '(main::__ANON__:2)', 'callers() r1');
$l = __LINE__;
sub r1 { "" =~ /$r1/; }
r1();
is ($c, '(main::__ANON__:1)(main::r1:2)', 'callers() r1/r1');
$l = __LINE__;
sub c2 { $c = callers() }
my $r2 = qr/(?{ c2 })/;
"" =~ /$r2/;
is ($c, '(main::c2:2)(main::__ANON__:3)', 'callers() r2/c2');
sub r2 { "" =~ /$r2/; }
r2();
is ($c, '(main::c2:2)(main::__ANON__:5)(main::r2:6)', 'callers() r2/r2/c2');
$l = __LINE__;
sub c3 { $c = callers() }
my $r3 = qr/(?{ c3 })/;
my $c1;
"ABC" =~ /A(?{ $c1 = callers() })B${r3}C/;
is ($c, '(main::c3:2)(main::__ANON__:4)', 'callers() r3/c3');
is ($c1,'', 'callers() r3/c3 part 2');
sub r3 { "ABC" =~ /A(?{ $c1 = callers() })B${r3}C/; }
r3();
is ($c, '(main::c3:2)(main::__ANON__:7)(main::r3:8)', 'callers() r3/r3/c3');
is ($c1,'(main::r3:8)', 'callers() r3/r3/c3 part 2');
}
# [perl #113928] caller behaving unexpectedly in re-evals
#
# make sure __SUB__ within a code block returns something safe.
# NB waht it actually returns is subject to change
{
my $s;
sub f1 { /(?{ $s = CORE::__SUB__; })/ }
f1();
is ($s, \&f1, '__SUB__ direct');
my $r = qr/(?{ $s = CORE::__SUB__; })/;
sub f2 { "" =~ $r }
f2();
is ($s, \&f2, '__SUB__ qr');
sub f3 { "AB" =~ /A${r}B/ }
f3();
is ($s, \&f3, '__SUB__ qr multi');
}
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