xref: /openbsd/gnu/usr.bin/perl/t/lib/strict/subs (revision 097a140d)

Check strict subs functionality

__END__

# no strict, should build & run ok.
Fred ;
my $fred ;
$b = "fred" ;
$a = $$b ;
EXPECT

########

use strict qw(refs vars);
Fred ;
EXPECT

########

use strict ;
no strict 'subs' ;
Fred ;
EXPECT

########

# strict subs - error
use strict 'subs' ;
my @a = (1..2);
my $b = xyz;
EXPECT
Bareword "xyz" not allowed while "strict subs" in use at - line 5.
Execution of - aborted due to compilation errors.
########

# strict subs - error
use strict 'subs' ;
Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 4.
Execution of - aborted due to compilation errors.
########

# strict subs - error
use strict 'subs' ;
my @a = (A..Z);
EXPECT
Bareword "A" not allowed while "strict subs" in use at - line 4.
Bareword "Z" not allowed while "strict subs" in use at - line 4.
Execution of - aborted due to compilation errors.
########

# strict subs - error
use strict 'subs' ;
my $a = (B..Y);
EXPECT
Bareword "B" not allowed while "strict subs" in use at - line 4.
Bareword "Y" not allowed while "strict subs" in use at - line 4.
Execution of - aborted due to compilation errors.
########

# strict subs - error
use strict ;
Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 4.
Execution of - aborted due to compilation errors.
########

# strict subs - no error
use strict 'subs' ;
sub Fred {}
Fred ;
EXPECT

########

# Check compile time scope of strict subs pragma
use strict 'subs' ;
{
    no strict ;
    my $a = Fred ;
}
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 8.
Execution of - aborted due to compilation errors.
########

# Check compile time scope of strict subs pragma
no strict;
{
    use strict 'subs' ;
    my $a = Fred ;
}
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 6.
Execution of - aborted due to compilation errors.
########

# Check compile time scope of strict vars pragma
use strict 'vars' ;
{
    no strict ;
    $joe = 1 ;
}
$joe = 1 ;
EXPECT
Variable "$joe" is not imported at - line 8.
Global symbol "$joe" requires explicit package name (did you forget to declare "my $joe"?) at - line 8.
Execution of - aborted due to compilation errors.
########

# Check compile time scope of strict vars pragma
no strict;
{
    use strict 'vars' ;
    $joe = 1 ;
}
$joe = 1 ;
EXPECT
Global symbol "$joe" requires explicit package name (did you forget to declare "my $joe"?) at - line 6.
Execution of - aborted due to compilation errors.
########

# Check runtime scope of strict refs pragma
use strict 'refs';
my $fred ;
my $b = "fred" ;
{
    no strict ;
    my $a = $$b ;
}
my $a = $$b ;
EXPECT
Can't use string ("fred") as a SCALAR ref while "strict refs" in use at - line 10.
########

# Check runtime scope of strict refs pragma
no strict ;
my $fred ;
my $b = "fred" ;
{
    use strict 'refs' ;
    my $a = $$b ;
}
my $a = $$b ;
EXPECT
Can't use string ("fred") as a SCALAR ref while "strict refs" in use at - line 8.
########

# Check runtime scope of strict refs pragma
no strict ;
my $fred ;
my $b = "fred" ;
{
    use strict 'refs' ;
    $a = sub { my $c = $$b ; }
}
&$a ;
EXPECT
Can't use string ("fred") as a SCALAR ref while "strict refs" in use at - line 8.
########

use strict 'subs' ;
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########

--FILE-- abc
my $a = Fred ;
1;
--FILE--
use strict 'subs' ;
require "./abc";
EXPECT

########

--FILE-- abc
use strict 'subs' ;
1;
--FILE--
require "./abc";
my $a = Fred ;
EXPECT

########

--FILE-- abc
use strict 'subs' ;
my $a = Fred ;
1;
--FILE--
Fred ;
require "./abc";
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at ./abc line 2.
Compilation failed in require at - line 2.
########

--FILE-- abc.pm
use strict 'subs' ;
my $a = Fred ;
1;
--FILE--
Fred ;
use abc;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at abc.pm line 2.
Compilation failed in require at - line 2.
BEGIN failed--compilation aborted at - line 2.
########

# Check scope of pragma with eval
no strict ;
eval {
    my $a = Fred ;
};
print STDERR $@;
my $a = Fred ;
EXPECT

########

# Check scope of pragma with eval
no strict ;
eval {
    use strict 'subs' ;
    my $a = Fred ;
};
print STDERR $@;
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 6.
Execution of - aborted due to compilation errors.
########

# Check scope of pragma with eval
use strict 'subs' ;
eval {
    my $a = Fred ;
};
print STDERR $@;
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 5.
Bareword "Fred" not allowed while "strict subs" in use at - line 8.
Execution of - aborted due to compilation errors.
########

# Check scope of pragma with eval
use strict 'subs' ;
eval {
    no strict ;
    my $a = Fred ;
};
print STDERR $@;
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 9.
Execution of - aborted due to compilation errors.
########

# Check scope of pragma with eval
no strict ;
eval '
    Fred ;
'; print STDERR $@ ;
Fred ;
EXPECT

########

# Check scope of pragma with eval
no strict ;
eval q[
    use strict 'subs' ;
    Fred ;
]; print STDERR $@;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at (eval 1) line 3.
########

# Check scope of pragma with eval
use strict 'subs' ;
eval '
    Fred ;
'; print STDERR $@ ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at (eval 1) line 2.
########

# Check scope of pragma with eval
use strict 'subs' ;
eval '
    no strict ;
    my $a = Fred ;
'; print STDERR $@;
my $a = Fred ;
EXPECT
Bareword "Fred" not allowed while "strict subs" in use at - line 8.
Execution of - aborted due to compilation errors.
########

# see if Foo->Bar(...) etc work under strictures
use strict;
package Foo; sub Bar { print "@_\n" }
Foo->Bar('a',1);
Bar Foo ('b',2);
Foo->Bar(qw/c 3/);
Bar Foo (qw/d 4/);
Foo::->Bar('A',1);
Bar Foo:: ('B',2);
Foo::->Bar(qw/C 3/);
Bar Foo:: (qw/D 4/);
EXPECT
Foo a 1
Foo b 2
Foo c 3
Foo d 4
Foo A 1
Foo B 2
Foo C 3
Foo D 4
########

# Check that barewords on the RHS of a regex match are caught
use strict;
"" =~ foo;
EXPECT
Bareword "foo" not allowed while "strict subs" in use at - line 4.
Execution of - aborted due to compilation errors.

########

# ID 20020703.002 (#10021)
use strict;
use warnings;
my $abc = XYZ ? 1 : 0;
print "$abc\n";
EXPECT
Bareword "XYZ" not allowed while "strict subs" in use at - line 5.
Execution of - aborted due to compilation errors.
########

# [perl #10021]
use strict;
use warnings;
print "" if BAREWORD;
EXPECT
Bareword "BAREWORD" not allowed while "strict subs" in use at - line 5.
Execution of - aborted due to compilation errors.
########
# Ticket: 18927
use strict 'subs';
print 1..1, bad;
EXPECT
Bareword "bad" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
eval q{ use strict; no strict refs; };
print $@;
EXPECT
Bareword "refs" not allowed while "strict subs" in use at (eval 1) line 1.
########
# [perl #25147]
use strict;
print "" if BAREWORD;
EXPECT
Bareword "BAREWORD" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
# [perl #26910] hints not propagated into (?{...})
use strict 'subs';
qr/(?{my $x=foo})/;
EXPECT
Bareword "foo" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
# Regexp compilation errors weren't UTF-8 clean
use strict 'subs';
use utf8;
use open qw( :utf8 :std );
qr/(?{my $x=fòò})/;
EXPECT
Bareword "fòò" not allowed while "strict subs" in use at - line 5.
Execution of - aborted due to compilation errors.
########
#  [perl #27628] strict 'subs' didn't warn on bareword array index
use strict 'subs';
my $x=$a[FOO];
EXPECT
Bareword "FOO" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
use strict 'subs';
my @a;my $x=$a[FOO];
EXPECT
Bareword "FOO" not allowed while "strict subs" in use at - line 2.
Execution of - aborted due to compilation errors.
########
# [perl #53806] No complain about bareword
use strict 'subs';
print FOO . "\n";
EXPECT
Bareword "FOO" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
# [perl #53806] No complain about bareword
use strict 'subs';
$ENV{PATH} = "";
system(FOO . "\n");
EXPECT
Bareword "FOO" not allowed while "strict subs" in use at - line 4.
Execution of - aborted due to compilation errors.
########
use strict 'subs';
my @players;
eval { @players = sort(_rankCompare @players) };
sub _rankCompare2 { }
@players = sort(_rankCompare2 @players);
EXPECT

########
use strict;
readline(FOO);
EXPECT

########
use strict 'subs';
sub sayfoo { print "foo:@_\n" ; "ret\n" }
print sayfoo "bar";
print sayfoo . "bar\n";
EXPECT
foo:bar
ret
foo:
ret
bar
########
# infinite loop breaks some strict checking
use strict 'subs';
sub foo {
    1 while 1;
    kill FOO, 1;
}
EXPECT
Bareword "FOO" not allowed while "strict subs" in use at - line 5.
Execution of - aborted due to compilation errors.
########
# make sure checks are done within (?{})
use strict 'subs';
/(?{FOO})/
EXPECT
Bareword "FOO" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
# [perl #126981] Strict subs vs. multideref
my $h;
my $v1 = $h->{+CONST_TYPO};
use strict 'subs';
my $v2 = $h->{+CONST_TYPO};
EXPECT
Bareword "CONST_TYPO" not allowed while "strict subs" in use at - line 5.
Execution of - aborted due to compilation errors.
########
# NAME constant-folded barewords still trigger stricture
my $x = !BARE1;
use strict 'subs';
my $y = !BARE2;
EXPECT
Bareword "BARE2" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.
########
# NAME multiconcat and barewords gh #17254
use strict;
sub foo { "foo" }
print foo() . SLASH . "bar";
EXPECT
Bareword "SLASH" not allowed while "strict subs" in use at - line 3.
Execution of - aborted due to compilation errors.