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#!./perl -w
# Check that lines from eval are correctly retained by the debugger
# Uncomment this for testing, but don't leave it in for "production", as
# we've not yet verified that use works.
# use strict;
print "1..109\n";
my $test = 0;
sub failed {
my ($got, $expected, $name) = @_;
print "not ok $test - $name\n";
my @caller = caller(1);
print "# Failed test at $caller[1] line $caller[2]\n";
if (defined $got) {
print "# Got '$got'\n";
} else {
print "# Got undef\n";
}
print "# Expected $expected\n";
return;
}
sub is($$$) {
my ($got, $expect, $name) = @_;
$test = $test + 1;
if (defined $expect) {
if (defined $got && $got eq $expect) {
print "ok $test - $name\n";
return 1;
}
failed($got, "'$expect'", $name);
} else {
if (!defined $got) {
print "ok $test - $name\n";
return 1;
}
failed($got, 'undef', $name);
}
}
$^P = 0xA;
my @before = grep { /eval/ } keys %::;
is ((scalar @before), 0, "No evals");
my %seen;
sub check_retained_lines {
my ($prog, $name) = @_;
# Is there a more efficient way to write this?
my @expect_lines = (undef, map ({"$_\n"} split "\n", $prog), "\n", ';');
# sort in decreasing number so that $keys[0] is the from the most
# recent eval. In theory we should only have one, but if something
# breaks we might have more than one, and keys will return them in a
# random order, so if we dont do this then failing tests will have
# inconsistent results from run to run.
my @keys = map { $_->[0] }
sort { $b->[1] <=> $a->[1] }
map { (!$seen{$_} and /eval (\d+)/) ? [ $_, $1 ] : () }
keys %::;
is ((scalar @keys), 1, "1 new eval");
my @got_lines = @{$::{$keys[0]}};
is ((scalar @got_lines),
(scalar @expect_lines), "Right number of lines for $name");
for (0..$#expect_lines) {
is ($got_lines[$_], $expect_lines[$_], "Line $_ is correct");
}
# if we are "leaking" evals we only want to fail the current test,
# so we need to mark them all seen (older code only marked $keys[0]
# seen and this caused tests to fail that actually worked properly.)
$seen{$_}++ for @keys;
}
my $name = 'foo';
for my $sep (' ', "\0") {
my $prog = "sub $name {
'Perl${sep}Rules'
};
1;
";
eval $prog or die;
check_retained_lines($prog, ord $sep);
$name++;
}
{
# This contains a syntax error
my $prog = "sub $name {
'This is $name'
}
# 10 errors to triger a croak during compilation.
1 +; 1 +; 1 +; 1 +; 1 +;
1 +; 1 +; 1 +; 1 +; 1 +;
1 +; # and one more for good measure.
";
eval $prog and die;
is (eval "$name()", "This is $name", "Subroutine was compiled, despite error")
or print STDERR "# $@\n";
check_retained_lines($prog,
'eval that defines subroutine but has syntax error');
$name++;
}
foreach my $flags (0x0, 0x800, 0x1000, 0x1800) {
local $^P = $^P | $flags;
# This is easier if we accept that the guts eval will add a trailing \n
# for us
my $prog = "1 + 1 + 1\n";
my $fail = "1 +;\n" x 11; # we need 10 errors to trigger a croak during
# compile, we add an extra one just for good
# measure.
is (eval $prog, 3, 'String eval works');
if ($flags & 0x800) {
check_retained_lines($prog, sprintf "%#X", $^P);
} else {
my @after = grep { /eval/ } keys %::;
is (scalar @after, 0 + keys %seen,
"evals that don't define subroutines are correctly cleaned up");
}
is (eval $fail, undef, 'Failed string eval fails');
if ($flags & 0x1000) {
check_retained_lines($fail, sprintf "%#X", $^P);
} else {
my @after = grep { /eval/ } keys %::;
is (scalar @after, 0 + keys %seen,
"evals that fail are correctly cleaned up");
}
}
# BEGIN blocks that die
for (0xA, 0) {
local $^P = $_;
eval (my $prog = "BEGIN{die}\n");
if ($_) {
check_retained_lines($prog, 'eval that defines BEGIN that dies');
}
else {
my @after = grep { /eval/ } keys %::;
is (scalar @after, 0 + keys %seen,
"evals with BEGIN{die} are correctly cleaned up");
}
}
for (0xA, 0) {
local $^P = $_;
eval (my $prog = "UNITCHECK{die}\n");
is (!!$@, 1, "Is \$@ true?");
is ($@=~/UNITCHECK failed--call queue aborted/, 1,
"Error is expected value?");
if ($_) {
check_retained_lines($prog, 'eval that defines UNITCHECK that dies');
}
else {
my @after = grep { /eval/ } keys %::;
is (scalar @after, 0 + keys %seen,
"evals with UNITCHECK{die} are correctly cleaned up");
}
}
# [perl #79442] A #line "foo" directive in a string eval was not updating
# *{"_<foo"} in threaded perls, and was not putting the right lines into
# the right elements of @{"_<foo"} in non-threaded perls.
{
local $^P = 0x400|0x100|0x10;
eval qq{#line 42 "hash-line-eval"\n labadalabada()\n};
is $::{"_<hash-line-eval"}[42], " labadalabada()\n",
'#line 42 "foo" in a string eval updates @{"_<foo"}';
eval qq{#line 42 "figgle"\n#line 85 "doggo"\n labadalabada()\n};
is $::{"_<doggo"}[85], " labadalabada()\n",
'subsequent #line 42 "foo" in a string eval updates @{"_<foo"}';
}
# Modifying ${"_<foo"} should not stop lines from being retained.
{
local $^P = 0x400|0x100|0x10;
eval <<'end';
#line 42 "copfilesv-modification"
BEGIN{ ${"_<copfilesv-modification"} = \1 }
#line 52 "copfilesv-modified"
abcdefg();
end
is $::{"_<copfilesv-modified"}[52], " abcdefg();\n",
'#line 42 "foo" in a str eval is not confused by ${"_<foo"} changing';
}
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