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|
Check existing $^W functionality
__END__
# warnable code, warnings disabled
$a =+ 3 ;
EXPECT
########
-w
# warnable code, warnings enabled via command line switch
$c =+ 3 ;
EXPECT
Reversed += operator at - line 3.
Name "main::c" used only once: possible typo at - line 3.
########
#! perl -w
# warnable code, warnings enabled via #! line
$c =+ 3 ;
EXPECT
Reversed += operator at - line 3.
Name "main::c" used only once: possible typo at - line 3.
########
# warnable code, warnings enabled via compile time $^W
BEGIN { $^W = 1 }
$c =+ 3 ;
EXPECT
Reversed += operator at - line 4.
Name "main::c" used only once: possible typo at - line 4.
########
-w
# warnable code, warnings enabled via command line switch
use utf8;
use open qw( :utf8 :std );
$Ằ =+ 3 ;
EXPECT
Reversed += operator at - line 5.
Name "main::Ằ" used only once: possible typo at - line 5.
########
#! perl -w
# warnable code, warnings enabled via #! line
use utf8;
use open qw( :utf8 :std );
$Ằ =+ 3 ;
EXPECT
Reversed += operator at - line 5.
Name "main::Ằ" used only once: possible typo at - line 5.
########
# warnable code, warnings enabled via compile time $^W
BEGIN { $^W = 1 }
use utf8;
use open qw( :utf8 :std );
$Ằ =+ 3 ;
EXPECT
Reversed += operator at - line 6.
Name "main::Ằ" used only once: possible typo at - line 6.
########
# compile-time warnable code, warnings enabled via runtime $^W
# so no warning printed.
$^W = 1 ;
$a =+ 3 ;
EXPECT
########
# warnable code, warnings enabled via runtime $^W
$^W = 1 ;
my $b ; chop $b ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 4.
########
# warnings enabled at compile time, disabled at run time
BEGIN { $^W = 1 }
$^W = 0 ;
my $b ; chop $b ;
EXPECT
########
# warnings disabled at compile time, enabled at run time
BEGIN { $^W = 0 }
$^W = 1 ;
my $b ; chop $b ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 5.
########
-w
--FILE-- abcd
my $b ; chop $b ;
1 ;
--FILE--
require "./abcd";
EXPECT
Use of uninitialized value $b in scalar chop at ./abcd line 1.
########
--FILE-- abcd
my $b ; chop $b ;
1 ;
--FILE--
#! perl -w
require "./abcd";
EXPECT
Use of uninitialized value $b in scalar chop at ./abcd line 1.
########
--FILE-- abcd
my $b ; chop $b ;
1 ;
--FILE--
$^W =1 ;
require "./abcd";
EXPECT
Use of uninitialized value $b in scalar chop at ./abcd line 1.
########
--FILE-- abcd
$^W = 0;
my $b ; chop $b ;
1 ;
--FILE--
$^W =1 ;
require "./abcd";
EXPECT
########
--FILE-- abcd
$^W = 1;
1 ;
--FILE--
$^W =0 ;
require "./abcd";
my $b ; chop $b ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 3.
########
$^W = 1;
eval 'my $b ; chop $b ;' ;
print $@ ;
EXPECT
Use of uninitialized value $b in scalar chop at (eval 1) line 1.
########
eval '$^W = 1;' ;
print $@ ;
my $b ; chop $b ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 4.
########
eval {$^W = 1;} ;
print $@ ;
my $b ; chop $b ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 4.
########
{
local ($^W) = 1;
}
my $b ; chop $b ;
EXPECT
########
my $a ; chop $a ;
{
local ($^W) = 1;
my $b ; chop $b ;
}
my $c ; chop $c ;
EXPECT
Use of uninitialized value $b in scalar chop at - line 5.
########
-w
-e undef
EXPECT
Use of uninitialized value in -e at - line 2.
########
$^W = 1 + 2 ;
EXPECT
########
$^W = $a ;
EXPECT
########
sub fred {}
$^W = fred() ;
EXPECT
########
sub fred { my $b ; chop $b ;}
{ local $^W = 0 ;
fred() ;
}
EXPECT
########
sub fred { my $b ; chop $b ;}
{ local $^W = 1 ;
fred() ;
}
EXPECT
Use of uninitialized value $b in scalar chop at - line 2.
|
