Check FATAL functionality

__END__

# Check compile time warning
use warnings FATAL => 'syntax' ;
{
    no warnings ;
    $a =+ 1 ;
}
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at - line 8.
########

# Check compile time warning
use warnings FATAL => 'all' ;
{
    no warnings ;
    my $a =+ 1 ;
}
my $a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at - line 8.
########

# Check runtime scope of pragma
use warnings FATAL => 'uninitialized' ;
{
    no warnings ;
    my $b ; chop $b ;
}
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 8.
########

# Check runtime scope of pragma
use warnings FATAL => 'all' ;
{
    no warnings ;
    my $b ; chop $b ;
}
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 8.
########

# Check runtime scope of pragma
no warnings ;
{
    use warnings FATAL => 'uninitialized' ;
    $a = sub { my $b ; chop $b ; }
}
&$a ;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 6.
########

# Check runtime scope of pragma
no warnings ;
{
    use warnings FATAL => 'all' ;
    $a = sub { my $b ; chop $b ; }
}
&$a ;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 6.
########

--FILE-- abc
$a =+ 1 ;
1;
--FILE-- 
use warnings FATAL => 'syntax' ;
require "./abc";
EXPECT

########

--FILE-- abc
use warnings FATAL => 'syntax' ;
1;
--FILE-- 
require "./abc";
$a =+ 1 ;
EXPECT

########

--FILE-- abc
use warnings 'syntax' ;
$a =+ 1 ;
1;
--FILE-- 
use warnings FATAL => 'uninitialized' ;
require "./abc";
my $a ; chop $a ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at ./abc line 2.
Use of uninitialized value $a in scalar chop at - line 3.
########

--FILE-- abc.pm
use warnings 'syntax' ;
$a =+ 1 ;
1;
--FILE-- 
use warnings FATAL => 'uninitialized' ;
use abc;
my $a ; chop $a ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at abc.pm line 2.
Use of uninitialized value $a in scalar chop at - line 3.
########

# Check scope of pragma with eval
no warnings ;
eval {
    use warnings FATAL => 'uninitialized' ;
    my $b ; chop $b ;
}; print STDERR "-- $@" ;
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
-- Use of uninitialized value $b in scalar chop at - line 6.
The End.
########

# Check scope of pragma with eval
use warnings FATAL => 'uninitialized' ;
eval {
    my $b ; chop $b ;
}; print STDERR "-- $@" ;
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
-- Use of uninitialized value $b in scalar chop at - line 5.
Use of uninitialized value $b in scalar chop at - line 7.
########

# Check scope of pragma with eval
use warnings FATAL => 'uninitialized' ;
eval {
    no warnings ;
    my $b ; chop $b ;
}; print STDERR $@ ;
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 8.
########

# Check scope of pragma with eval
no warnings ;
eval {
    use warnings FATAL => 'syntax' ;
    $a =+ 1 ;
}; print STDERR "-- $@" ;
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at - line 6.
########

# Check scope of pragma with eval
use warnings FATAL => 'syntax' ;
eval {
    $a =+ 1 ;
}; print STDERR "-- $@" ;
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at - line 5.
########

# Check scope of pragma with eval
use warnings FATAL => 'syntax' ;
eval {
    no warnings ;
    $a =+ 1 ;
}; print STDERR $@ ;
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at - line 8.
########

# Check scope of pragma with eval
no warnings ;
eval {
    use warnings FATAL => 'syntax' ;
}; print STDERR $@ ;
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
The End.
########

# Check scope of pragma with eval
no warnings ;
eval q[ 
    use warnings FATAL => 'uninitialized' ;
    my $b ; chop $b ;
]; print STDERR "-- $@";
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
-- Use of uninitialized value $b in scalar chop at (eval 1) line 3.
The End.
########

# Check scope of pragma with eval
use warnings FATAL => 'uninitialized' ;
eval '
    my $b ; chop $b ;
'; print STDERR "-- $@" ;
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
-- Use of uninitialized value $b in scalar chop at (eval 1) line 2.
Use of uninitialized value $b in scalar chop at - line 7.
########

# Check scope of pragma with eval
use warnings FATAL => 'uninitialized' ;
eval '
    no warnings ;
    my $b ; chop $b ;
'; print STDERR $@ ;
my $b ; chop $b ;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 8.
########

# Check scope of pragma with eval
no warnings ;
eval q[ 
    use warnings FATAL => 'syntax' ;
    $a =+ 1 ;
]; print STDERR "-- $@";
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
-- Reversed += operator at (eval 1) line 3.
The End.
########

# Check scope of pragma with eval
use warnings FATAL => 'syntax' ;
eval '
    $a =+ 1 ;
'; print STDERR "-- $@";
print STDERR "The End.\n" ;
EXPECT
-- Reversed += operator at (eval 1) line 2.
The End.
########

# Check scope of pragma with eval
use warnings FATAL => 'syntax' ;
eval '
    no warnings ;
    $a =+ 1 ;
'; print STDERR "-- $@";
$a =+ 1 ;
print STDERR "The End.\n" ;
EXPECT
Reversed += operator at - line 8.
########
# TODO ? !$Config{usethreads} && $::UTF8 && ($ENV{PERL_DESTRUCT_LEVEL} || 0) > 1 ? "Parser leaks OPs, which leak shared hash keys" : ''

use warnings 'void' ;

time ;

{
    use warnings FATAL => qw(void) ;
    $a = "abc";
    length $a ;
}

join "", 1,2,3 ;

print "done\n" ;
EXPECT
Useless use of time in void context at - line 4.
Useless use of length in void context at - line 9.
########
# TODO ? !$Config{usethreads} && $::UTF8 && ($ENV{PERL_DESTRUCT_LEVEL} || 0) > 1 ? "Parser leaks OPs, which leak shared hash keys" : ''

use warnings ;

time ;

{
    use warnings FATAL => qw(void) ;
    $a = "abc";
    length $a ;
}

join "", 1,2,3 ;

print "done\n" ;
EXPECT
Useless use of time in void context at - line 4.
Useless use of length in void context at - line 9.
########

use warnings FATAL => 'all';
{
    no warnings;
    my $b ; chop $b;
    {
        use warnings ;
        my $b ; chop $b;
    }
}
my $b ; chop $b;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 8.
Use of uninitialized value $b in scalar chop at - line 11.
########

use warnings FATAL => 'all';
{
    no warnings FATAL => 'all';
    my $b ; chop $b;
    {
        use warnings ;
        my $b ; chop $b;
    }
}
my $b ; chop $b;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 8.
Use of uninitialized value $b in scalar chop at - line 11.
########

use warnings FATAL => 'all';
{
    no warnings 'syntax';
    {
        use warnings ;
        my $b ; chop $b;
    }
}
my $b ; chop $b;
print STDERR "The End.\n" ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 7.
########

use warnings FATAL => 'syntax', NONFATAL => 'void' ;

$a = "abc";
length $a;
print STDERR "The End.\n" ;
EXPECT
Useless use of length in void context at - line 5.
The End.
########

use warnings FATAL => 'all', NONFATAL => 'void' ;

$a = "abc";
length $a;
print STDERR "The End.\n" ;
EXPECT
Useless use of length in void context at - line 5.
The End.
########

use warnings FATAL => 'all', NONFATAL => 'void' ;

my $a ; chomp $a;

$b = "abc" ;
length $b;
print STDERR "The End.\n" ;
EXPECT
Useless use of length in void context at - line 7.
Use of uninitialized value $a in scalar chomp at - line 4.
########

use warnings FATAL => 'void', NONFATAL => 'void' ;
$a = "abc";
length $a;
print STDERR "The End.\n" ;
EXPECT
Useless use of length in void context at - line 4.
The End.
########
# TODO ? !$Config{usethreads} && $::UTF8 && ($ENV{PERL_DESTRUCT_LEVEL} || 0) > 1 ? "Parser leaks OPs, which leak shared hash keys" : ''

use warnings NONFATAL => 'void', FATAL => 'void' ;
$a = "abc";
length $a;
print STDERR "The End.\n" ;
EXPECT
Useless use of length in void context at - line 4.
########

use warnings FATAL => 'all', NONFATAL => 'io';
no warnings 'once';

open(F, "<true\ncd");
close "fred" ;
print STDERR "The End.\n" ;
EXPECT
Unsuccessful open on filename containing newline at - line 5.
close() on unopened filehandle fred at - line 6.
The End.
########

use warnings FATAL => 'all', NONFATAL => 'io', FATAL => 'unopened' ;
no warnings 'once';

open(F, "<true\ncd");
close "fred" ;
print STDERR "The End.\n" ;
EXPECT
Unsuccessful open on filename containing newline at - line 5.
close() on unopened filehandle fred at - line 6.