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|
#!./perl -w
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
use strict;
no warnings 'syntax';
{
# Bug #77084 points out a corruption problem when scalar //g is used
# on overloaded objects.
my @realloc;
my $TAG = "foo:bar";
use overload '""' => sub {$TAG};
my $o = bless [];
my ($one) = $o =~ /(.*)/g;
push @realloc, "xxxxxx"; # encourage realloc of SV and PVX
is $one, $TAG, "list context //g against overloaded object";
my $r = $o =~ /(.*)/g;
push @realloc, "yyyyyy"; # encourage realloc of SV and PVX
is $1, $TAG, "scalar context //g against overloaded object";
pos ($o) = 0; # Reset pos, as //g in scalar context sets it to non-0.
$o =~ /(.*)/g;
push @realloc, "zzzzzz"; # encourage realloc of SV and PVX
is $1, $TAG, "void context //g against overloaded object";
}
{
# an overloaded stringify returning itself shouldn't loop indefinitely
{
package Self;
use overload q{""} => sub {
return shift;
},
fallback => 1;
}
my $obj = bless [], 'Self';
my $r = qr/$obj/;
pass("self object, 1 arg");
$r = qr/foo$obj/;
pass("self object, 2 args");
}
{
# [perl #116823]
# when overloading regex string constants, a different code path
# was taken if the regex was compile-time, leading to overloaded
# regex constant string segments not being handled correctly.
# They were just treated as OP_CONST strings to be concatted together.
# In particular, if the overload returned a regex object, it would
# just be stringified rather than having any code blocks processed.
BEGIN {
overload::constant qr => sub {
my ($raw, $cooked, $type) = @_;
return $cooked unless defined $::CONST_QR_CLASS;
if ($type =~ /qq?/) {
return bless \$cooked, $::CONST_QR_CLASS;
} else {
return $cooked;
}
};
}
{
# returns a qr// object
package OL_QR;
use overload q{""} => sub {
my $re = shift;
return qr/(?{ $OL_QR::count++ })$$re/;
},
fallback => 1;
}
{
# returns a string
package OL_STR;
use overload q{""} => sub {
my $re = shift;
return qq/(?{ \$OL_STR::count++ })$$re/;
},
fallback => 1;
}
my $qr;
$::CONST_QR_CLASS = 'OL_QR';
$OL_QR::count = 0;
$qr = eval q{ qr/^foo$/; };
ok("foo" =~ $qr, "compile-time, OL_QR, single constant segment");
is($OL_QR::count, 1, "flag");
$OL_QR::count = 0;
$qr = eval q{ qr/^foo$(?{ $OL_QR::count++ })/; };
ok("foo" =~ $qr, "compile-time, OL_QR, multiple constant segments");
is($OL_QR::count, 2, "qr2 flag");
# test /foo.../ when foo is given string overloading,
# for various permutations of '...'
$::CONST_QR_CLASS = 'OL_STR';
for my $has_re_eval (0, 1) {
for my $has_qr (0, 1) {
for my $has_code (0, 1) {
for my $has_runtime (0, 1) {
for my $has_runtime_code (0, 1) {
if ($has_runtime_code) {
next unless $has_runtime;
}
note( "re_eval=$has_re_eval "
. "qr=$has_qr "
. "code=$has_code "
. "runtime=$has_runtime "
. "runtime_code=$has_runtime_code");
my $eval = '';
$eval .= q{use re 'eval'; } if $has_re_eval;
$eval .= q{$match = $str =~ };
$eval .= q{qr} if $has_qr;
$eval .= q{/^abc};
$eval .= q{(?{$blocks++})} if $has_code;
$eval .= q{$runtime} if $has_runtime;
$eval .= q{/; 1;};
my $runtime = q{def};
$runtime .= q{(?{$run_blocks++})} if $has_runtime_code;
my $blocks = 0;
my $run_blocks = 0;
my $match;
my $str = "abc";
$str .= "def" if $runtime;
my $result = eval $eval;
my $err = $@;
$result = $result ? 1 : 0;
if (!$has_re_eval) {
is($result, 0, "EVAL: $eval");
like($err, qr/Eval-group not allowed at runtime/,
"\$\@: $eval");
next;
}
is($result, 1, "EVAL: $eval");
diag("\$@=[$err]") unless $result;
is($match, 1, "MATCH: $eval");
is($blocks, $has_code, "blocks");
is($run_blocks, $has_runtime_code, "run_blocks");
}
}
}
}
}
undef $::CONST_QR_CLASS;
}
done_testing();
|
