(called 3 times via depcom)
\1 better written as $1
- use warning 'syntax' ;
+ use warnings 'syntax' ;
s/(abc)/\1/;
warn(warn_nosemi)
\x%.*s will produce malformed UTF-8 character; use \x{%.*s} for that
use utf8 ;
$_ = "\xffe"
+
+ Unrecognized escape \\%c passed through
+ $a = "\m" ;
+
+ %s number > %s non-portable
+ my $a = 0b011111111111111111111111111111110 ;
+ $a = 0b011111111111111111111111111111111 ;
+ $a = 0b111111111111111111111111111111111 ;
+ $a = 0x0fffffffe ;
+ $a = 0x0ffffffff ;
+ $a = 0x1ffffffff ;
+ $a = 0037777777776 ;
+ $a = 0037777777777 ;
+ $a = 0047777777777 ;
+
+ Integer overflow in binary number
+ my $a = 0b011111111111111111111111111111110 ;
+ $a = 0b011111111111111111111111111111111 ;
+ $a = 0b111111111111111111111111111111111 ;
+ $a = 0x0fffffffe ;
+ $a = 0x0ffffffff ;
+ $a = 0x1ffffffff ;
+ $a = 0037777777776 ;
+ $a = 0037777777777 ;
+ $a = 0047777777777 ;
+ Mandatory Warnings
+ ------------------
+ Use of "%s" without parentheses is ambiguous [check_uni]
+ rand + 4
+
+ Ambiguous use of -%s resolved as -&%s() [yylex]
+ sub fred {} ; - fred ;
+
+ Precedence problem: open %.*s should be open(%.*s) [yylex]
+ open FOO || die;
+
+ Operator or semicolon missing before %c%s [yylex]
+ Ambiguous use of %c resolved as operator %c
+ *foo *foo
+
__END__
# toke.c
-use warning 'deprecated' ;
+use warnings 'deprecated' ;
+1 if $a EQ $b ;
+1 if $a NE $b ;
+1 if $a GT $b ;
+1 if $a LT $b ;
+1 if $a GE $b ;
+1 if $a LE $b ;
+no warnings 'deprecated' ;
1 if $a EQ $b ;
1 if $a NE $b ;
1 if $a GT $b ;
Use of LE is deprecated at - line 8.
########
# toke.c
-use warning 'deprecated' ;
+use warnings 'deprecated' ;
+format STDOUT =
+@<<< @||| @>>> @>>>
+$a $b "abc" 'def'
+.
+no warnings 'deprecated' ;
format STDOUT =
@<<< @||| @>>> @>>>
$a $b "abc" 'def'
.
-($a, $b) = (1,2,3);
-write;
EXPECT
Use of comma-less variable list is deprecated at - line 5.
Use of comma-less variable list is deprecated at - line 5.
Use of comma-less variable list is deprecated at - line 5.
-1 2 abc def
########
# toke.c
-use warning 'deprecated' ;
+use warnings 'deprecated' ;
+$a = <<;
+
+no warnings 'deprecated' ;
$a = <<;
EXPECT
Use of bare << to mean <<"" is deprecated at - line 3.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
+s/(abc)/\1/;
+no warnings 'syntax' ;
s/(abc)/\1/;
EXPECT
\1 better written as $1 at - line 3.
########
# toke.c
-use warning 'semicolon' ;
+use warnings 'semicolon' ;
+$a = 1
+&time ;
+no warnings 'semicolon' ;
$a = 1
&time ;
EXPECT
# Scalars leaked: due to syntax errors
$ENV{PERL_DESTRUCT_LEVEL} = 0 unless $ENV{PERL_DESTRUCT_LEVEL} > 3;
}
-use warning 'syntax' ;
+use warnings 'syntax' ;
my $a =+ 2 ;
$a =- 2 ;
$a =* 2 ;
Unterminated <> operator at - line 15.
########
# toke.c
-use warning 'syntax' ;
+BEGIN {
+ # Scalars leaked: due to syntax errors
+ $ENV{PERL_DESTRUCT_LEVEL} = 0 unless $ENV{PERL_DESTRUCT_LEVEL} > 3;
+}
+no warnings 'syntax' ;
+my $a =+ 2 ;
+$a =- 2 ;
+$a =* 2 ;
+$a =% 2 ;
+$a =& 2 ;
+$a =. 2 ;
+$a =^ 2 ;
+$a =| 2 ;
+$a =< 2 ;
+$a =/ 2 ;
+EXPECT
+syntax error at - line 12, near "=."
+syntax error at - line 13, near "=^"
+syntax error at - line 14, near "=|"
+Unterminated <> operator at - line 15.
+########
+# toke.c
+use warnings 'syntax' ;
+my $a = $a[1,2] ;
+no warnings 'syntax' ;
my $a = $a[1,2] ;
EXPECT
Multidimensional syntax $a[1,2] not supported at - line 3.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
sub fred {} ; $SIG{TERM} = fred;
+no warnings 'syntax' ;
+$SIG{TERM} = fred;
EXPECT
You need to quote "fred" at - line 3.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
+@a[3] = 2;
+@a{3} = 2;
+no warnings 'syntax' ;
@a[3] = 2;
@a{3} = 2;
EXPECT
Scalar value @a{3} better written as $a{3} at - line 4.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
+$_ = "ab" ;
+s/(ab)/\1/e;
+no warnings 'syntax' ;
$_ = "ab" ;
s/(ab)/\1/e;
EXPECT
Can't use \1 to mean $1 in expression at - line 4.
########
# toke.c
-use warning 'reserved' ;
+use warnings 'reserved' ;
+$a = abc;
+no warnings 'reserved' ;
$a = abc;
EXPECT
Unquoted string "abc" may clash with future reserved word at - line 3.
########
# toke.c
-use warning 'octal' ;
+use warnings 'octal' ;
+chmod 3;
+no warnings 'octal' ;
chmod 3;
EXPECT
-chmod: mode argument is missing initial 0 at - line 3, at end of line
+chmod: mode argument is missing initial 0 at - line 3.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
+@a = qw(a, b, c) ;
+no warnings 'syntax' ;
@a = qw(a, b, c) ;
EXPECT
Possible attempt to separate words with commas at - line 3.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
+@a = qw(a b #) ;
+no warnings 'syntax' ;
@a = qw(a b #) ;
EXPECT
Possible attempt to put comments in qw() list at - line 3.
########
# toke.c
-use warning 'octal' ;
+use warnings 'octal' ;
+umask 3;
+no warnings 'octal' ;
umask 3;
EXPECT
-umask: argument is missing initial 0 at - line 3, at end of line
+umask: argument is missing initial 0 at - line 3.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
print ("")
EXPECT
print (...) interpreted as function at - line 3.
########
# toke.c
-use warning 'syntax' ;
+no warnings 'syntax' ;
+print ("")
+EXPECT
+
+########
+# toke.c
+use warnings 'syntax' ;
printf ("")
EXPECT
printf (...) interpreted as function at - line 3.
########
# toke.c
-use warning 'syntax' ;
+no warnings 'syntax' ;
+printf ("")
+EXPECT
+
+########
+# toke.c
+use warnings 'syntax' ;
sort ("")
EXPECT
sort (...) interpreted as function at - line 3.
########
# toke.c
-use warning 'ambiguous' ;
+no warnings 'syntax' ;
+sort ("")
+EXPECT
+
+########
+# toke.c
+use warnings 'ambiguous' ;
+$a = ${time[2]};
+no warnings 'ambiguous' ;
$a = ${time[2]};
EXPECT
Ambiguous use of ${time[...]} resolved to $time[...] at - line 3.
########
# toke.c
-use warning 'ambiguous' ;
+use warnings 'ambiguous' ;
$a = ${time{2}};
EXPECT
Ambiguous use of ${time{...}} resolved to $time{...} at - line 3.
########
# toke.c
-use warning 'ambiguous' ;
+no warnings 'ambiguous' ;
+$a = ${time{2}};
+EXPECT
+
+########
+# toke.c
+use warnings 'ambiguous' ;
+$a = ${time} ;
+no warnings 'ambiguous' ;
$a = ${time} ;
EXPECT
Ambiguous use of ${time} resolved to $time at - line 3.
########
# toke.c
-use warning 'ambiguous' ;
+use warnings 'ambiguous' ;
sub fred {}
$a = ${fred} ;
+no warnings 'ambiguous' ;
+$a = ${fred} ;
EXPECT
Ambiguous use of ${fred} resolved to $fred at - line 4.
########
# toke.c
-use warning 'syntax' ;
+use warnings 'syntax' ;
+$a = 1_2;
+$a = 1_2345_6;
+no warnings 'syntax' ;
$a = 1_2;
$a = 1_2345_6;
EXPECT
Misplaced _ in number at - line 4.
########
# toke.c
-use warning 'unsafe' ;
+use warnings 'unsafe' ;
+#line 25 "bar"
+$a = FRED:: ;
+no warnings 'unsafe' ;
+#line 25 "bar"
$a = FRED:: ;
EXPECT
-Bareword "FRED::" refers to nonexistent package at - line 3.
+Bareword "FRED::" refers to nonexistent package at bar line 25.
########
# toke.c
-use warning 'ambiguous' ;
+use warnings 'ambiguous' ;
sub time {}
-my $a = time()
+my $a = time() ;
+no warnings 'ambiguous' ;
+my $b = time() ;
EXPECT
Ambiguous call resolved as CORE::time(), qualify as such or use & at - line 4.
########
# toke.c
-use warning 'utf8' ;
-$_ = " \x{123} " ;
+use warnings 'utf8' ;
+eval <<'EOE';
+{
+#line 30 "foo"
+ $_ = " \x{123} " ;
+}
+EOE
EXPECT
-Use of \x{} without utf8 declaration at - line 3.
+Use of \x{} without utf8 declaration at foo line 30.
########
# toke.c
-use warning 'utf8' ;
+no warnings 'utf8' ;
+eval <<'EOE';
+{
+#line 30 "foo"
+ $_ = " \x{123} " ;
+}
+EOE
+EXPECT
+
+########
+# toke.c
+use warnings 'utf8' ;
use utf8 ;
$_ = " \xffe " ;
+no warnings 'utf8' ;
+$_ = " \xffe " ;
EXPECT
\xff will produce malformed UTF-8 character; use \x{ff} for that at - line 4.
+########
+# toke.c
+my $a = rand + 4 ;
+EXPECT
+Warning: Use of "rand" without parens is ambiguous at - line 2.
+########
+# toke.c
+$^W = 0 ;
+my $a = rand + 4 ;
+{
+ no warnings 'ambiguous' ;
+ $a = rand + 4 ;
+ use warnings 'ambiguous' ;
+ $a = rand + 4 ;
+}
+$a = rand + 4 ;
+EXPECT
+Warning: Use of "rand" without parens is ambiguous at - line 3.
+Warning: Use of "rand" without parens is ambiguous at - line 8.
+Warning: Use of "rand" without parens is ambiguous at - line 10.
+########
+# toke.c
+sub fred {};
+-fred ;
+EXPECT
+Ambiguous use of -fred resolved as -&fred() at - line 3.
+########
+# toke.c
+$^W = 0 ;
+sub fred {} ;
+-fred ;
+{
+ no warnings 'ambiguous' ;
+ -fred ;
+ use warnings 'ambiguous' ;
+ -fred ;
+}
+-fred ;
+EXPECT
+Ambiguous use of -fred resolved as -&fred() at - line 4.
+Ambiguous use of -fred resolved as -&fred() at - line 9.
+Ambiguous use of -fred resolved as -&fred() at - line 11.
+########
+# toke.c
+open FOO || time;
+EXPECT
+Precedence problem: open FOO should be open(FOO) at - line 2.
+########
+# toke.c
+$^W = 0 ;
+open FOO || time;
+{
+ no warnings 'ambiguous' ;
+ open FOO || time;
+ use warnings 'ambiguous' ;
+ open FOO || time;
+}
+open FOO || time;
+EXPECT
+Precedence problem: open FOO should be open(FOO) at - line 3.
+Precedence problem: open FOO should be open(FOO) at - line 8.
+Precedence problem: open FOO should be open(FOO) at - line 10.
+########
+# toke.c
+$^W = 0 ;
+*foo *foo ;
+{
+ no warnings 'ambiguous' ;
+ *foo *foo ;
+ use warnings 'ambiguous' ;
+ *foo *foo ;
+}
+*foo *foo ;
+EXPECT
+Operator or semicolon missing before *foo at - line 3.
+Ambiguous use of * resolved as operator * at - line 3.
+Operator or semicolon missing before *foo at - line 8.
+Ambiguous use of * resolved as operator * at - line 8.
+Operator or semicolon missing before *foo at - line 10.
+Ambiguous use of * resolved as operator * at - line 10.
+########
+# toke.c
+use warnings 'unsafe' ;
+my $a = "\m" ;
+no warnings 'unsafe' ;
+$a = "\m" ;
+EXPECT
+Unrecognized escape \m passed through at - line 3.
+########
+# toke.c
+use warnings 'portable' ;
+my $a = 0b011111111111111111111111111111110 ;
+ $a = 0b011111111111111111111111111111111 ;
+ $a = 0b111111111111111111111111111111111 ;
+ $a = 0x0fffffffe ;
+ $a = 0x0ffffffff ;
+ $a = 0x1ffffffff ;
+ $a = 0037777777776 ;
+ $a = 0037777777777 ;
+ $a = 0047777777777 ;
+no warnings 'portable' ;
+ $a = 0b011111111111111111111111111111110 ;
+ $a = 0b011111111111111111111111111111111 ;
+ $a = 0b111111111111111111111111111111111 ;
+ $a = 0x0fffffffe ;
+ $a = 0x0ffffffff ;
+ $a = 0x1ffffffff ;
+ $a = 0037777777776 ;
+ $a = 0037777777777 ;
+ $a = 0047777777777 ;
+EXPECT
+Binary number > 0b11111111111111111111111111111111 non-portable at - line 5.
+Hexadecimal number > 0xffffffff non-portable at - line 8.
+Octal number > 037777777777 non-portable at - line 11.
+########
+# toke.c
+use warnings 'overflow' ;
+my $a = 0b011111111111111111111111111111110 ;
+ $a = 0b011111111111111111111111111111111 ;
+ $a = 0b10000000000000000000000000000000000000000000000000000000000000000 ;
+ $a = 0x0fffffffe ;
+ $a = 0x0ffffffff ;
+ $a = 0x10000000000000000 ;
+ $a = 0037777777776 ;
+ $a = 0037777777777 ;
+ $a = 002000000000000000000000;
+no warnings 'overflow' ;
+ $a = 0b011111111111111111111111111111110 ;
+ $a = 0b011111111111111111111111111111111 ;
+ $a = 0b10000000000000000000000000000000000000000000000000000000000000000 ;
+ $a = 0x0fffffffe ;
+ $a = 0x0ffffffff ;
+ $a = 0x10000000000000000 ;
+ $a = 0037777777776 ;
+ $a = 0037777777777 ;
+ $a = 002000000000000000000000;
+EXPECT
+Integer overflow in binary number at - line 5.
+Integer overflow in hexadecimal number at - line 8.
+Integer overflow in octal number at - line 11.