This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Reinstate "PATCH: {perl #127582] Over eager warning for /[.foo.]/""
[perl5.git] / t / re / reg_mesg.t
CommitLineData
b45f050a
JF
1#!./perl -w
2
21adcf33
KW
3$|=1; # outherwise things get mixed up in output
4
b45f050a
JF
5BEGIN {
6 chdir 't' if -d 't';
cc7e6304 7 @INC = qw '../lib ../ext/re';
cb79f740 8 require './test.pl';
2b08d1e2 9 skip_all_without_unicode_tables();
cb79f740 10 eval 'require Config'; # assume defaults if this fails
b45f050a
JF
11}
12
cb79f740 13use strict;
c1d900c3 14use open qw(:utf8 :std);
b45f050a
JF
15
16##
17## If the markers used are changed (search for "MARKER1" in regcomp.c),
cb79f740 18## update only these two regexs, and leave the {#} in the @death/@warning
b45f050a
JF
19## arrays below. The {#} is a meta-marker -- it marks where the marker should
20## go.
cb79f740 21##
af01601c
KW
22## Returns empty string if that is what is expected. Otherwise, handles
23## either a scalar, turning it into a single element array; or a ref to an
24## array, adjusting each element. If called in array context, returns an
25## array, otherwise the join of all elements
26
cb79f740 27sub fixup_expect {
af01601c 28 my $expect_ref = shift;
63374c78 29 return "" if $expect_ref eq "";
af01601c
KW
30
31 my @expect;
32 if (ref $expect_ref) {
33 @expect = @$expect_ref;
34 }
35 else {
36 @expect = $expect_ref;
37 }
38
39 foreach my $element (@expect) {
6d24e9d4 40 $element =~ s/{\#}/in regex; marked by <-- HERE in/;
af01601c
KW
41 $element =~ s/{\#}/ <-- HERE /;
42 $element .= " at ";
43 }
44 return wantarray ? @expect : join "", @expect;
cb79f740 45}
b45f050a 46
c1d900c3 47## Because we don't "use utf8" in this file, we need to do some extra legwork
b0e1d434
KW
48## for the utf8 tests: Prepend 'use utf8' to the pattern, and mark the strings
49## to check against as UTF-8, but for this all to work properly, the character
50## 'ネ' (U+30CD) is required in each pattern somewhere as a marker.
4cabb89a
BF
51##
52## This also creates a second variant of the tests to check if the
b0e1d434
KW
53## latin1 error messages are working correctly. Because we don't 'use utf8',
54## we can't tell if something is UTF-8 or Latin1, so you need the suffix
55## '; no latin1' to not have the second variant.
4cabb89a
BF
56my $l1 = "\x{ef}";
57my $utf8 = "\x{30cd}";
58utf8::encode($utf8);
59
c1d900c3
BF
60sub mark_as_utf8 {
61 my @ret;
67cdf558
KW
62 for (my $i = 0; $i < @_; $i += 2) {
63 my $pat = $_[$i];
64 my $msg = $_[$i+1];
4cabb89a
BF
65 my $l1_pat = $pat =~ s/$utf8/$l1/gr;
66 my $l1_msg;
c1d900c3 67 $pat = "use utf8; $pat";
b0e1d434 68
c1d900c3 69 if (ref $msg) {
4cabb89a
BF
70 $l1_msg = [ map { s/$utf8/$l1/gr } @$msg ];
71 @$msg = map { my $c = $_; utf8::decode($c); $c } @$msg;
c1d900c3
BF
72 }
73 else {
4cabb89a 74 $l1_msg = $msg =~ s/$utf8/$l1/gr;
c1d900c3
BF
75 utf8::decode($msg);
76 }
77 push @ret, $pat => $msg;
b0e1d434 78
4cabb89a 79 push @ret, $l1_pat => $l1_msg unless $l1_pat =~ /#no latin1/;
c1d900c3
BF
80 }
81 return @ret;
82}
83
cb79f740
NC
84my $inf_m1 = ($Config::Config{reg_infty} || 32767) - 1;
85my $inf_p1 = $inf_m1 + 2;
b45f050a 86
c877af1b
KW
87my $B_hex = sprintf("\\x%02X", ord "B");
88my $low_mixed_alpha = ('A' lt 'a') ? 'A' : 'a';
89my $high_mixed_alpha = ('A' lt 'a') ? 'a' : 'A';
90my $low_mixed_digit = ('A' lt '0') ? 'A' : '0';
91my $high_mixed_digit = ('A' lt '0') ? '0' : 'A';
92
acdfc3b6
KW
93my $colon_hex = sprintf "%02X", ord(":");
94my $tab_hex = sprintf "%02X", ord("\t");
95
b45f050a
JF
96##
97## Key-value pairs of code/error of code that should have fatal errors.
98##
99my @death =
100(
6d24e9d4 101 '/[[=foo=]]/' => 'POSIX syntax [= =] is reserved for future extensions {#} m/[[=foo=]{#}]/',
b45f050a 102
58e23c8d 103 '/(?<= .*)/' => 'Variable length lookbehind not implemented in regex m/(?<= .*)/',
b45f050a 104
58e23c8d 105 '/(?<= x{1000})/' => 'Lookbehind longer than 255 not implemented in regex m/(?<= x{1000})/',
b45f050a 106
6d24e9d4 107 '/(?@)/' => 'Sequence (?@...) not implemented {#} m/(?@{#})/',
b45f050a 108
9da1dd8f 109 '/(?{ 1/' => 'Missing right curly or square bracket',
b45f050a 110
6d24e9d4 111 '/(?(1x))/' => 'Switch condition not recognized {#} m/(?(1x{#}))/',
311cc1ad 112 '/(?(1x(?#)))/'=> 'Switch condition not recognized {#} m/(?(1x{#}(?#)))/',
b45f050a 113
8fb0127d
YO
114 '/(?(1)/' => 'Switch (?(condition)... not terminated {#} m/(?(1){#}/',
115 '/(?(1)x/' => 'Switch (?(condition)... not terminated {#} m/(?(1)x{#}/',
116 '/(?(1)x|y/' => 'Switch (?(condition)... not terminated {#} m/(?(1)x|y{#}/',
6d24e9d4 117 '/(?(1)x|y|z)/' => 'Switch (?(condition)... contains too many branches {#} m/(?(1)x|y|{#}z)/',
b45f050a 118
c1d900c3 119 '/(?(x)y|x)/' => 'Unknown switch condition (?(...)) {#} m/(?(x{#})y|x)/',
10380cb3
FC
120 '/(?(??{}))/' => 'Unknown switch condition (?(...)) {#} m/(?(?{#}?{}))/',
121 '/(?(?[]))/' => 'Unknown switch condition (?(...)) {#} m/(?(?{#}[]))/',
b45f050a 122
6d24e9d4 123 '/(?/' => 'Sequence (? incomplete {#} m/(?{#}/',
b45f050a 124
6d24e9d4
KW
125 '/(?;x/' => 'Sequence (?;...) not recognized {#} m/(?;{#}x/',
126 '/(?<;x/' => 'Group name must start with a non-digit word character {#} m/(?<;{#}x/',
127 '/(?\ix/' => 'Sequence (?\...) not recognized {#} m/(?\{#}ix/',
128 '/(?\mx/' => 'Sequence (?\...) not recognized {#} m/(?\{#}mx/',
129 '/(?\:x/' => 'Sequence (?\...) not recognized {#} m/(?\{#}:x/',
130 '/(?\=x/' => 'Sequence (?\...) not recognized {#} m/(?\{#}=x/',
131 '/(?\!x/' => 'Sequence (?\...) not recognized {#} m/(?\{#}!x/',
132 '/(?\<=x/' => 'Sequence (?\...) not recognized {#} m/(?\{#}<=x/',
133 '/(?\<!x/' => 'Sequence (?\...) not recognized {#} m/(?\{#}<!x/',
134 '/(?\>x/' => 'Sequence (?\...) not recognized {#} m/(?\{#}>x/',
135 '/(?^-i:foo)/' => 'Sequence (?^-...) not recognized {#} m/(?^-{#}i:foo)/',
136 '/(?^-i)foo/' => 'Sequence (?^-...) not recognized {#} m/(?^-{#}i)foo/',
137 '/(?^d:foo)/' => 'Sequence (?^d...) not recognized {#} m/(?^d{#}:foo)/',
138 '/(?^d)foo/' => 'Sequence (?^d...) not recognized {#} m/(?^d{#})foo/',
139 '/(?^lu:foo)/' => 'Regexp modifiers "l" and "u" are mutually exclusive {#} m/(?^lu{#}:foo)/',
140 '/(?^lu)foo/' => 'Regexp modifiers "l" and "u" are mutually exclusive {#} m/(?^lu{#})foo/',
141'/(?da:foo)/' => 'Regexp modifiers "d" and "a" are mutually exclusive {#} m/(?da{#}:foo)/',
142'/(?lil:foo)/' => 'Regexp modifier "l" may not appear twice {#} m/(?lil{#}:foo)/',
143'/(?aaia:foo)/' => 'Regexp modifier "a" may appear a maximum of twice {#} m/(?aaia{#}:foo)/',
144'/(?i-l:foo)/' => 'Regexp modifier "l" may not appear after the "-" {#} m/(?i-l{#}:foo)/',
cc74c5bd 145
6d24e9d4 146 '/((x)/' => 'Unmatched ( {#} m/({#}(x)/',
77eddfe1 147 '/{(}/' => 'Unmatched ( {#} m/{({#}}/', # [perl #127599]
b45f050a 148
6d24e9d4 149 "/x{$inf_p1}/" => "Quantifier in {,} bigger than $inf_m1 {#} m/x{{#}$inf_p1}/",
b45f050a 150
b45f050a 151
6d24e9d4 152 '/x**/' => 'Nested quantifiers {#} m/x**{#}/',
b45f050a 153
6d24e9d4 154 '/x[/' => 'Unmatched [ {#} m/x[{#}/',
b45f050a 155
6d24e9d4 156 '/*/', => 'Quantifier follows nothing {#} m/*{#}/',
b45f050a 157
6d24e9d4 158 '/\p{x/' => 'Missing right brace on \p{} {#} m/\p{{#}x/',
b45f050a 159
6d24e9d4 160 '/[\p{x]/' => 'Missing right brace on \p{} {#} m/[\p{{#}x]/',
b45f050a 161
6d24e9d4 162 '/(x)\2/' => 'Reference to nonexistent group {#} m/(x)\2{#}/',
b45f050a 163
779fedd7 164 '/\g/' => 'Unterminated \g... pattern {#} m/\g{#}/',
76cccc4d
KW
165 '/\g{1/' => 'Unterminated \g{...} pattern {#} m/\g{1{#}/',
166
40809656 167 'my $m = "\\\"; $m =~ $m', => 'Trailing \ in regex m/\/',
b45f050a 168
6d24e9d4
KW
169 '/\x{1/' => 'Missing right brace on \x{} {#} m/\x{1{#}/',
170 '/\x{X/' => 'Missing right brace on \x{} {#} m/\x{{#}X/',
171
172 '/[\x{X]/' => 'Missing right brace on \x{} {#} m/[\x{{#}X]/',
173 '/[\x{A]/' => 'Missing right brace on \x{} {#} m/[\x{A{#}]/',
174
175 '/\o{1/' => 'Missing right brace on \o{ {#} m/\o{1{#}/',
176 '/\o{X/' => 'Missing right brace on \o{ {#} m/\o{{#}X/',
177
178 '/[\o{X]/' => 'Missing right brace on \o{ {#} m/[\o{{#}X]/',
179 '/[\o{7]/' => 'Missing right brace on \o{ {#} m/[\o{7{#}]/',
180
181 '/[[:barf:]]/' => 'POSIX class [:barf:] unknown {#} m/[[:barf:]{#}]/',
182
183 '/[[=barf=]]/' => 'POSIX syntax [= =] is reserved for future extensions {#} m/[[=barf=]{#}]/',
184
185 '/[[.barf.]]/' => 'POSIX syntax [. .] is reserved for future extensions {#} m/[[.barf.]{#}]/',
186
187 '/[z-a]/' => 'Invalid [] range "z-a" {#} m/[z-a{#}]/',
188
c30c479a 189 '/\p/' => 'Empty \p {#} m/\p{#}/',
856d91b3
KW
190 '/\P/' => 'Empty \P {#} m/\P{#}/',
191 '/\p{}/' => 'Empty \p{} {#} m/\p{{#}}/',
6d24e9d4 192 '/\P{}/' => 'Empty \P{} {#} m/\P{{#}}/',
64935bc6
KW
193
194'/a\b{cde/' => 'Missing right brace on \b{} {#} m/a\b{{#}cde/',
195'/a\B{cde/' => 'Missing right brace on \B{} {#} m/a\B{{#}cde/',
196
197 '/\b{}/' => 'Empty \b{} {#} m/\b{}{#}/',
198 '/\B{}/' => 'Empty \B{} {#} m/\B{}{#}/',
199
200 '/\b{gc}/' => "'gc' is an unknown bound type {#} m/\\b{gc{#}}/",
201 '/\B{gc}/' => "'gc' is an unknown bound type {#} m/\\B{gc{#}}/",
202
46d34d0e
KW
203 '/(?[[[::]]])/' => "Syntax error in (?[...]) in regex m/(?[[[::]]])/",
204 '/(?[[[:w:]]])/' => "Syntax error in (?[...]) in regex m/(?[[[:w:]]])/",
205 '/(?[[:w:]])/' => "",
b7c50ab8 206 '/[][[:alpha:]]' => "", # [perl #127581]
d8387e4d
KW
207 '/([.].*)[.]/' => "", # [perl #127582]
208 '/[.].*[.]/' => "", # [perl #127604]
6d24e9d4 209 '/(?[a])/' => 'Unexpected character {#} m/(?[a{#}])/',
6d24e9d4
KW
210 '/(?[ + \t ])/' => 'Unexpected binary operator \'+\' with no preceding operand {#} m/(?[ +{#} \t ])/',
211 '/(?[ \cK - ( + \t ) ])/' => 'Unexpected binary operator \'+\' with no preceding operand {#} m/(?[ \cK - ( +{#} \t ) ])/',
212 '/(?[ \cK ( \t ) ])/' => 'Unexpected \'(\' with no preceding operator {#} m/(?[ \cK ({#} \t ) ])/',
213 '/(?[ \cK \t ])/' => 'Operand with no preceding operator {#} m/(?[ \cK \t{#} ])/',
214 '/(?[ \0004 ])/' => 'Need exactly 3 octal digits {#} m/(?[ \0004 {#}])/',
215 '/(?[ \05 ])/' => 'Need exactly 3 octal digits {#} m/(?[ \05 {#}])/',
216 '/(?[ \o{1038} ])/' => 'Non-octal character {#} m/(?[ \o{1038{#}} ])/',
217 '/(?[ \o{} ])/' => 'Number with no digits {#} m/(?[ \o{}{#} ])/',
218 '/(?[ \x{defg} ])/' => 'Non-hex character {#} m/(?[ \x{defg{#}} ])/',
219 '/(?[ \xabcdef ])/' => 'Use \\x{...} for more than two hex characters {#} m/(?[ \xabc{#}def ])/',
220 '/(?[ \x{} ])/' => 'Number with no digits {#} m/(?[ \x{}{#} ])/',
221 '/(?[ \cK + ) ])/' => 'Unexpected \')\' {#} m/(?[ \cK + ){#} ])/',
222 '/(?[ \cK + ])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[ \cK + {#}])/',
e7cce976 223 '/(?[ ( ) ])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[ ( ) {#}])/',
2985caa9 224 '/(?[[0]+()+])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[[0]+()+{#}])/',
29f52644
KW
225 '/(?[ \p{foo} ])/' => 'Can\'t find Unicode property definition "foo" {#} m/(?[ \p{foo}{#} ])/',
226 '/(?[ \p{ foo = bar } ])/' => 'Can\'t find Unicode property definition "foo = bar" {#} m/(?[ \p{ foo = bar }{#} ])/',
6d24e9d4 227 '/(?[ \8 ])/' => 'Unrecognized escape \8 in character class {#} m/(?[ \8{#} ])/',
3f4fde43
KW
228 '/(?[ \t ]/' => 'Syntax error in (?[...]) in regex m/(?[ \t ]/',
229 '/(?[ [ \t ]/' => 'Syntax error in (?[...]) in regex m/(?[ [ \t ]/',
230 '/(?[ \t ] ]/' => 'Syntax error in (?[...]) in regex m/(?[ \t ] ]/',
231 '/(?[ [ ] ]/' => 'Syntax error in (?[...]) in regex m/(?[ [ ] ]/',
232 '/(?[ \t + \e # This was supposed to be a comment ])/' => 'Syntax error in (?[...]) in regex m/(?[ \t + \e # This was supposed to be a comment ])/',
6d24e9d4
KW
233 '/(?[ ])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[ {#}])/',
234 'm/(?[[a-\d]])/' => 'False [] range "a-\d" {#} m/(?[[a-\d{#}]])/',
235 'm/(?[[\w-x]])/' => 'False [] range "\w-" {#} m/(?[[\w-{#}x]])/',
236 'm/(?[[a-\pM]])/' => 'False [] range "a-\pM" {#} m/(?[[a-\pM{#}]])/',
237 'm/(?[[\pM-x]])/' => 'False [] range "\pM-" {#} m/(?[[\pM-{#}x]])/',
8f0cd35a 238 'm/(?[[^\N{LATIN CAPITAL LETTER A WITH MACRON AND GRAVE}]])/' => '\N{} in inverted character class or as a range end-point is restricted to one character {#} m/(?[[^\N{U+100.300{#}}]])/',
b5864679
KW
239 'm/(?[ \p{Digit} & (?(?[ \p{Thai} | \p{Lao} ]))])/' => 'Sequence (?(...) not recognized {#} m/(?[ \p{Digit} & (?({#}?[ \p{Thai} | \p{Lao} ]))])/',
240 'm/(?[ \p{Digit} & (?:(?[ \p{Thai} | \p{Lao} ]))])/' => 'Expecting \'(?flags:(?[...\' {#} m/(?[ \p{Digit} & (?{#}:(?[ \p{Thai} | \p{Lao} ]))])/',
6d24e9d4
KW
241 'm/\o{/' => 'Missing right brace on \o{ {#} m/\o{{#}/',
242 'm/\o/' => 'Missing braces on \o{} {#} m/\o{#}/',
243 'm/\o{}/' => 'Number with no digits {#} m/\o{}{#}/',
244 'm/[\o{]/' => 'Missing right brace on \o{ {#} m/[\o{{#}]/',
245 'm/[\o]/' => 'Missing braces on \o{} {#} m/[\o{#}]/',
246 'm/[\o{}]/' => 'Number with no digits {#} m/[\o{}{#}]/',
247 'm/(?^-i:foo)/' => 'Sequence (?^-...) not recognized {#} m/(?^-{#}i:foo)/',
f1e1b256
YO
248 'm/\87/' => 'Reference to nonexistent group {#} m/\87{#}/',
249 'm/a\87/' => 'Reference to nonexistent group {#} m/a\87{#}/',
250 'm/a\97/' => 'Reference to nonexistent group {#} m/a\97{#}/',
07ea66ee
FC
251 'm/(*DOOF)/' => 'Unknown verb pattern \'DOOF\' {#} m/(*DOOF){#}/',
252 'm/(?&a/' => 'Sequence (?&... not terminated {#} m/(?&a{#}/',
75839571
FC
253 'm/(?P=/' => 'Sequence ?P=... not terminated {#} m/(?P={#}/',
254 "m/(?'/" => "Sequence (?'... not terminated {#} m/(?'{#}/",
255 "m/(?</" => "Sequence (?<... not terminated {#} m/(?<{#}/",
256 'm/(?&/' => 'Sequence (?&... not terminated {#} m/(?&{#}/',
257 'm/(?(</' => 'Sequence (?(<... not terminated {#} m/(?(<{#}/',
258 "m/(?('/" => "Sequence (?('... not terminated {#} m/(?('{#}/",
259 'm/\g{/' => 'Sequence \g{... not terminated {#} m/\g{{#}/',
260 'm/\k</' => 'Sequence \k<... not terminated {#} m/\k<{#}/',
9b8f4e92 261 'm/\cß/' => "Character following \"\\c\" must be printable ASCII",
cd209d9d
KW
262 '/((?# This is a comment in the middle of a token)?:foo)/' => 'In \'(?...)\', the \'(\' and \'?\' must be adjacent {#} m/((?# This is a comment in the middle of a token)?{#}:foo)/',
263 '/((?# This is a comment in the middle of a token)*FAIL)/' => 'In \'(*VERB...)\', the \'(\' and \'*\' must be adjacent {#} m/((?# This is a comment in the middle of a token)*{#}FAIL)/',
5a55ed33 264 '/(?[\ &!])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[\ &!{#}])/', # [perl #126180]
5982ac95 265 '/(?[()-!])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[()-!{#}])/', # [perl #126204]
174c9902 266 '/(?[!()])/' => 'Incomplete expression within \'(?[ ])\' {#} m/(?[!(){#}])/', # [perl #126404]
b45f050a 267);
c1d900c3 268
67cdf558
KW
269# These are messages that are warnings when not strict; death under 'use re
270# "strict". See comment before @warnings as to why some have a \x{100} in
271# them. This array has 3 elements per construct. [0] is the regex to use;
272# [1] is the message under no strict, and [2] is under strict.
273my @death_only_under_strict = (
274 'm/\xABC/' => "",
275 => 'Use \x{...} for more than two hex characters {#} m/\xABC{#}/',
276 'm/[\xABC]/' => "",
277 => 'Use \x{...} for more than two hex characters {#} m/[\xABC{#}]/',
278
279 # XXX This is a confusing error message. The G isn't ignored; it just
280 # terminates the \x. Also some messages below are missing the <-- HERE,
281 # aren't all category 'regexp'. (Hence we have to turn off 'digit'
282 # messages as well below)
283 'm/\xAG/' => 'Illegal hexadecimal digit \'G\' ignored',
284 => 'Non-hex character {#} m/\xAG{#}/',
285 'm/[\xAG]/' => 'Illegal hexadecimal digit \'G\' ignored',
286 => 'Non-hex character {#} m/[\xAG{#}]/',
287 'm/\o{789}/' => 'Non-octal character \'8\'. Resolved as "\o{7}"',
288 => 'Non-octal character {#} m/\o{78{#}9}/',
289 'm/[\o{789}]/' => 'Non-octal character \'8\'. Resolved as "\o{7}"',
290 => 'Non-octal character {#} m/[\o{78{#}9}]/',
291 'm/\x{}/' => "",
292 => 'Number with no digits {#} m/\x{}{#}/',
293 'm/[\x{}]/' => "",
294 => 'Number with no digits {#} m/[\x{}{#}]/',
295 'm/\x{ABCDEFG}/' => 'Illegal hexadecimal digit \'G\' ignored',
296 => 'Non-hex character {#} m/\x{ABCDEFG{#}}/',
297 'm/[\x{ABCDEFG}]/' => 'Illegal hexadecimal digit \'G\' ignored',
298 => 'Non-hex character {#} m/[\x{ABCDEFG{#}}]/',
67cdf558 299 'm/[\N{}]/' => 'Ignoring zero length \\N{} in character class {#} m/[\\N{}{#}]/',
fe0a3646
KW
300 => 'Zero length \\N{} {#} m/[\\N{}{#}]/',
301 'm/\N{}/' => "",
302 => 'Zero length \\N{} {#} m/\\N{}{#}/',
67cdf558
KW
303 "m'[\\y]\\x{100}'" => 'Unrecognized escape \y in character class passed through {#} m/[\y{#}]\x{100}/',
304 => 'Unrecognized escape \y in character class {#} m/[\y{#}]\x{100}/',
305 'm/[a-\d]\x{100}/' => 'False [] range "a-\d" {#} m/[a-\d{#}]\x{100}/',
306 => 'False [] range "a-\d" {#} m/[a-\d{#}]\x{100}/',
307 'm/[\w-x]\x{100}/' => 'False [] range "\w-" {#} m/[\w-{#}x]\x{100}/',
308 => 'False [] range "\w-" {#} m/[\w-{#}x]\x{100}/',
309 'm/[a-\pM]\x{100}/' => 'False [] range "a-\pM" {#} m/[a-\pM{#}]\x{100}/',
310 => 'False [] range "a-\pM" {#} m/[a-\pM{#}]\x{100}/',
311 'm/[\pM-x]\x{100}/' => 'False [] range "\pM-" {#} m/[\pM-{#}x]\x{100}/',
312 => 'False [] range "\pM-" {#} m/[\pM-{#}x]\x{100}/',
313 'm/[^\N{LATIN CAPITAL LETTER A WITH MACRON AND GRAVE}]/' => 'Using just the first character returned by \N{} in character class {#} m/[^\N{U+100.300}{#}]/',
314 => '\N{} in inverted character class or as a range end-point is restricted to one character {#} m/[^\N{U+100.300{#}}]/',
315 'm/[\x03-\N{LATIN CAPITAL LETTER A WITH MACRON AND GRAVE}]/' => 'Using just the first character returned by \N{} in character class {#} m/[\x03-\N{U+100.300}{#}]/',
316 => '\N{} in inverted character class or as a range end-point is restricted to one character {#} m/[\x03-\N{U+100.300{#}}]/',
317 'm/[\N{LATIN CAPITAL LETTER A WITH MACRON AND GRAVE}-\x{10FFFF}]/' => 'Using just the first character returned by \N{} in character class {#} m/[\N{U+100.300}{#}-\x{10FFFF}]/',
318 => '\N{} in inverted character class or as a range end-point is restricted to one character {#} m/[\N{U+100.300{#}}-\x{10FFFF}]/',
319 '/[\08]/' => '\'\08\' resolved to \'\o{0}8\' {#} m/[\08{#}]/',
320 => 'Need exactly 3 octal digits {#} m/[\08{#}]/',
321 '/[\018]/' => '\'\018\' resolved to \'\o{1}8\' {#} m/[\018{#}]/',
322 => 'Need exactly 3 octal digits {#} m/[\018{#}]/',
323 '/[\_\0]/' => "",
324 => 'Need exactly 3 octal digits {#} m/[\_\0]{#}/',
325 '/[\07]/' => "",
326 => 'Need exactly 3 octal digits {#} m/[\07]{#}/',
327 '/[\0005]/' => "",
328 => 'Need exactly 3 octal digits {#} m/[\0005]{#}/',
329 '/[\8\9]\x{100}/' => ['Unrecognized escape \8 in character class passed through {#} m/[\8{#}\9]\x{100}/',
330 'Unrecognized escape \9 in character class passed through {#} m/[\8\9{#}]\x{100}/',
331 ],
332 => 'Unrecognized escape \8 in character class {#} m/[\8{#}\9]\x{100}/',
333 '/[a-\d]\x{100}/' => 'False [] range "a-\d" {#} m/[a-\d{#}]\x{100}/',
334 => 'False [] range "a-\d" {#} m/[a-\d{#}]\x{100}/',
335 '/[\d-b]\x{100}/' => 'False [] range "\d-" {#} m/[\d-{#}b]\x{100}/',
336 => 'False [] range "\d-" {#} m/[\d-{#}b]\x{100}/',
337 '/[\s-\d]\x{100}/' => 'False [] range "\s-" {#} m/[\s-{#}\d]\x{100}/',
338 => 'False [] range "\s-" {#} m/[\s-{#}\d]\x{100}/',
339 '/[\d-\s]\x{100}/' => 'False [] range "\d-" {#} m/[\d-{#}\s]\x{100}/',
340 => 'False [] range "\d-" {#} m/[\d-{#}\s]\x{100}/',
341 '/[a-[:digit:]]\x{100}/' => 'False [] range "a-[:digit:]" {#} m/[a-[:digit:]{#}]\x{100}/',
342 => 'False [] range "a-[:digit:]" {#} m/[a-[:digit:]{#}]\x{100}/',
343 '/[[:digit:]-b]\x{100}/' => 'False [] range "[:digit:]-" {#} m/[[:digit:]-{#}b]\x{100}/',
344 => 'False [] range "[:digit:]-" {#} m/[[:digit:]-{#}b]\x{100}/',
345 '/[[:alpha:]-[:digit:]]\x{100}/' => 'False [] range "[:alpha:]-" {#} m/[[:alpha:]-{#}[:digit:]]\x{100}/',
346 => 'False [] range "[:alpha:]-" {#} m/[[:alpha:]-{#}[:digit:]]\x{100}/',
347 '/[[:digit:]-[:alpha:]]\x{100}/' => 'False [] range "[:digit:]-" {#} m/[[:digit:]-{#}[:alpha:]]\x{100}/',
348 => 'False [] range "[:digit:]-" {#} m/[[:digit:]-{#}[:alpha:]]\x{100}/',
349 '/[a\zb]\x{100}/' => 'Unrecognized escape \z in character class passed through {#} m/[a\z{#}b]\x{100}/',
350 => 'Unrecognized escape \z in character class {#} m/[a\z{#}b]\x{100}/',
351);
352
b0e1d434 353# These need the character 'ネ' as a marker for mark_as_utf8()
c1d900c3 354my @death_utf8 = mark_as_utf8(
c1d900c3
BF
355 '/ネ(?<= .*)/' => 'Variable length lookbehind not implemented in regex m/ネ(?<= .*)/',
356
357 '/(?<= ネ{1000})/' => 'Lookbehind longer than 255 not implemented in regex m/(?<= ネ{1000})/',
358
359 '/ネ(?ネ)ネ/' => 'Sequence (?ネ...) not recognized {#} m/ネ(?ネ{#})ネ/',
360
476afc4b 361 '/ネ(?(1ネ))ネ/' => 'Switch condition not recognized {#} m/ネ(?(1ネ{#}))ネ/',
c1d900c3
BF
362
363 '/(?(1)ネ|y|ヌ)/' => 'Switch (?(condition)... contains too many branches {#} m/(?(1)ネ|y|{#}ヌ)/',
364
365 '/(?(ネ)y|ネ)/' => 'Unknown switch condition (?(...)) {#} m/(?(ネ{#})y|ネ)/',
366
367 '/ネ(?/' => 'Sequence (? incomplete {#} m/ネ(?{#}/',
368
369 '/ネ(?;ネ/' => 'Sequence (?;...) not recognized {#} m/ネ(?;{#}ネ/',
370 '/ネ(?<;ネ/' => 'Group name must start with a non-digit word character {#} m/ネ(?<;{#}ネ/',
371 '/ネ(?\ixネ/' => 'Sequence (?\...) not recognized {#} m/ネ(?\{#}ixネ/',
372 '/ネ(?^lu:ネ)/' => 'Regexp modifiers "l" and "u" are mutually exclusive {#} m/ネ(?^lu{#}:ネ)/',
373'/ネ(?lil:ネ)/' => 'Regexp modifier "l" may not appear twice {#} m/ネ(?lil{#}:ネ)/',
374'/ネ(?aaia:ネ)/' => 'Regexp modifier "a" may appear a maximum of twice {#} m/ネ(?aaia{#}:ネ)/',
375'/ネ(?i-l:ネ)/' => 'Regexp modifier "l" may not appear after the "-" {#} m/ネ(?i-l{#}:ネ)/',
376
377 '/ネ((ネ)/' => 'Unmatched ( {#} m/ネ({#}(ネ)/',
378
379 "/ネ{$inf_p1}ネ/" => "Quantifier in {,} bigger than $inf_m1 {#} m/ネ{{#}$inf_p1}ネ/",
380
381
382 '/ネ**ネ/' => 'Nested quantifiers {#} m/ネ**{#}ネ/',
383
384 '/ネ[ネ/' => 'Unmatched [ {#} m/ネ[{#}ネ/',
385
386 '/*ネ/', => 'Quantifier follows nothing {#} m/*{#}ネ/',
387
388 '/ネ\p{ネ/' => 'Missing right brace on \p{} {#} m/ネ\p{{#}ネ/',
389
390 '/(ネ)\2ネ/' => 'Reference to nonexistent group {#} m/(ネ)\2{#}ネ/',
391
4cabb89a 392 '/\g{ネ/; #no latin1' => 'Sequence \g{... not terminated {#} m/\g{ネ{#}/',
c1d900c3
BF
393
394 'my $m = "ネ\\\"; $m =~ $m', => 'Trailing \ in regex m/ネ\/',
395
396 '/\x{ネ/' => 'Missing right brace on \x{} {#} m/\x{{#}ネ/',
397 '/ネ[\x{ネ]ネ/' => 'Missing right brace on \x{} {#} m/ネ[\x{{#}ネ]ネ/',
398 '/ネ[\x{ネ]/' => 'Missing right brace on \x{} {#} m/ネ[\x{{#}ネ]/',
399
400 '/ネ\o{ネ/' => 'Missing right brace on \o{ {#} m/ネ\o{{#}ネ/',
46d34d0e 401 '/ネ[[:ネ:]]ネ/' => "",
c1d900c3 402
c1d900c3
BF
403 '/[ネ-a]ネ/' => 'Invalid [] range "ネ-a" {#} m/[ネ-a{#}]ネ/',
404
405 '/ネ\p{}ネ/' => 'Empty \p{} {#} m/ネ\p{{#}}ネ/',
406
46d34d0e
KW
407 '/ネ(?[[[:ネ]]])ネ/' => "Syntax error in (?[...]) in regex m/ネ(?[[[:ネ]]])ネ/",
408 '/ネ(?[[[:ネ: ])ネ/' => "Syntax error in (?[...]) in regex m/ネ(?[[[:ネ: ])ネ/",
409 '/ネ(?[[[::]]])ネ/' => "Syntax error in (?[...]) in regex m/ネ(?[[[::]]])ネ/",
410 '/ネ(?[[[:ネ:]]])ネ/' => "Syntax error in (?[...]) in regex m/ネ(?[[[:ネ:]]])ネ/",
411 '/ネ(?[[:ネ:]])ネ/' => "",
c1d900c3 412 '/ネ(?[ネ])ネ/' => 'Unexpected character {#} m/ネ(?[ネ{#}])ネ/',
c1d900c3
BF
413 '/ネ(?[ + [ネ] ])/' => 'Unexpected binary operator \'+\' with no preceding operand {#} m/ネ(?[ +{#} [ネ] ])/',
414 '/ネ(?[ \cK - ( + [ネ] ) ])/' => 'Unexpected binary operator \'+\' with no preceding operand {#} m/ネ(?[ \cK - ( +{#} [ネ] ) ])/',
415 '/ネ(?[ \cK ( [ネ] ) ])/' => 'Unexpected \'(\' with no preceding operator {#} m/ネ(?[ \cK ({#} [ネ] ) ])/',
416 '/ネ(?[ \cK [ネ] ])ネ/' => 'Operand with no preceding operator {#} m/ネ(?[ \cK [ネ{#}] ])ネ/',
417 '/ネ(?[ \0004 ])ネ/' => 'Need exactly 3 octal digits {#} m/ネ(?[ \0004 {#}])ネ/',
418 '/(?[ \o{ネ} ])ネ/' => 'Non-octal character {#} m/(?[ \o{ネ{#}} ])ネ/',
419 '/ネ(?[ \o{} ])ネ/' => 'Number with no digits {#} m/ネ(?[ \o{}{#} ])ネ/',
420 '/(?[ \x{ネ} ])ネ/' => 'Non-hex character {#} m/(?[ \x{ネ{#}} ])ネ/',
29f52644
KW
421 '/(?[ \p{ネ} ])/' => 'Can\'t find Unicode property definition "ネ" {#} m/(?[ \p{ネ}{#} ])/',
422 '/(?[ \p{ ネ = bar } ])/' => 'Can\'t find Unicode property definition "ネ = bar" {#} m/(?[ \p{ ネ = bar }{#} ])/',
c1d900c3
BF
423 '/ネ(?[ \t ]/' => 'Syntax error in (?[...]) in regex m/ネ(?[ \t ]/',
424 '/(?[ \t + \e # ネ This was supposed to be a comment ])/' => 'Syntax error in (?[...]) in regex m/(?[ \t + \e # ネ This was supposed to be a comment ])/',
9b8f4e92
KW
425 'm/(*ネ)ネ/' => q<Unknown verb pattern 'ネ' {#} m/(*ネ){#}ネ/>,
426 '/\cネ/' => "Character following \"\\c\" must be printable ASCII",
64935bc6
KW
427 '/\b{ネ}/' => "'ネ' is an unknown bound type {#} m/\\b{ネ{#}}/",
428 '/\B{ネ}/' => "'ネ' is an unknown bound type {#} m/\\B{ネ{#}}/",
c1d900c3
BF
429);
430push @death, @death_utf8;
431
67cdf558
KW
432my @death_utf8_only_under_strict = (
433 "m'ネ[\\y]ネ'" => 'Unrecognized escape \y in character class passed through {#} m/ネ[\y{#}]ネ/',
434 => 'Unrecognized escape \y in character class {#} m/ネ[\y{#}]ネ/',
435 'm/ネ[ネ-\d]ネ/' => 'False [] range "ネ-\d" {#} m/ネ[ネ-\d{#}]ネ/',
436 => 'False [] range "ネ-\d" {#} m/ネ[ネ-\d{#}]ネ/',
437 'm/ネ[\w-ネ]ネ/' => 'False [] range "\w-" {#} m/ネ[\w-{#}ネ]ネ/',
438 => 'False [] range "\w-" {#} m/ネ[\w-{#}ネ]ネ/',
439 'm/ネ[ネ-\pM]ネ/' => 'False [] range "ネ-\pM" {#} m/ネ[ネ-\pM{#}]ネ/',
440 => 'False [] range "ネ-\pM" {#} m/ネ[ネ-\pM{#}]ネ/',
441 '/ネ[ネ-[:digit:]]ネ/' => 'False [] range "ネ-[:digit:]" {#} m/ネ[ネ-[:digit:]{#}]ネ/',
442 => 'False [] range "ネ-[:digit:]" {#} m/ネ[ネ-[:digit:]{#}]ネ/',
443 '/ネ[\d-\s]ネ/' => 'False [] range "\d-" {#} m/ネ[\d-{#}\s]ネ/',
444 => 'False [] range "\d-" {#} m/ネ[\d-{#}\s]ネ/',
445 '/ネ[a\zb]ネ/' => 'Unrecognized escape \z in character class passed through {#} m/ネ[a\z{#}b]ネ/',
446 => 'Unrecognized escape \z in character class {#} m/ネ[a\z{#}b]ネ/',
447);
902994e4 448# Tests involving a user-defined charnames translator are in pat_advanced.t
b45f050a 449
af01601c
KW
450# In the following arrays of warnings, the value can be an array of things to
451# expect. If the empty string, it means no warning should be raised.
452
6d24e9d4 453
499333dc
KW
454# Key-value pairs of code/error of code that should have non-fatal regexp
455# warnings. Most currently have \x{100} appended to them to force them to be
456# upgraded to UTF-8, and the first pass restarted. Previously this would
457# cause some warnings to be output twice. This tests that that behavior has
458# been fixed.
6d24e9d4 459
499333dc
KW
460my @warning = (
461 'm/\b*\x{100}/' => '\b* matches null string many times {#} m/\b*{#}\x{100}/',
64935bc6
KW
462 '/\b{g}/a' => "Using /u for '\\b{g}' instead of /a {#} m/\\b{g}{#}/",
463 '/\B{gcb}/a' => "Using /u for '\\B{gcb}' instead of /a {#} m/\\B{gcb}{#}/",
499333dc 464 'm/[:blank:]\x{100}/' => 'POSIX syntax [: :] belongs inside character classes {#} m/[:blank:]{#}\x{100}/',
7dbd4c44 465 'm/[[:cntrl:]][:^ascii:]\x{100}/' => 'POSIX syntax [: :] belongs inside character classes {#} m/[[:cntrl:]][:^ascii:]{#}\x{100}/',
46d34d0e
KW
466 'm/[[:ascii]]\x{100}/' => "Assuming NOT a POSIX class since there is no terminating ':' {#} m/[[:ascii{#}]]\\x{100}/",
467 'm/(?[[:word]])\x{100}/' => "Assuming NOT a POSIX class since there is no terminating ':' {#} m/(?[[:word{#}]])\\x{100}/",
499333dc 468 "m'\\y\\x{100}'" => 'Unrecognized escape \y passed through {#} m/\y{#}\x{100}/',
6d24e9d4
KW
469 '/x{3,1}/' => 'Quantifier {n,m} with n > m can\'t match {#} m/x{3,1}{#}/',
470 '/\08/' => '\'\08\' resolved to \'\o{0}8\' {#} m/\08{#}/',
471 '/\018/' => '\'\018\' resolved to \'\o{1}8\' {#} m/\018{#}/',
6d24e9d4
KW
472 '/(?=a)*/' => '(?=a)* matches null string many times {#} m/(?=a)*{#}/',
473 'my $x = \'\m\'; qr/a$x/' => 'Unrecognized escape \m passed through {#} m/a\m{#}/',
474 '/\q/' => 'Unrecognized escape \q passed through {#} m/\q{#}/',
499333dc 475
e1729dc6
FC
476 # These two tests do not include the marker, because regcomp.c no
477 # longer knows where it goes by the time this warning is emitted.
478 # See [perl #122680] regcomp warning gives wrong position of
499333dc 479 # problem.
e1729dc6
FC
480 '/(?=a){1,3}\x{100}/' => 'Quantifier unexpected on zero-length expression in regex m/(?=a){1,3}\x{100}/',
481 '/(a|b)(?=a){3}\x{100}/' => 'Quantifier unexpected on zero-length expression in regex m/(a|b)(?=a){3}\x{100}/',
499333dc 482
63fbd1cb 483 '/\_/' => "",
63fbd1cb 484 '/[\006]/' => "",
499333dc 485 '/[:alpha:]\x{100}/' => 'POSIX syntax [: :] belongs inside character classes {#} m/[:alpha:]{#}\x{100}/',
46d34d0e
KW
486 '/[:zog:]\x{100}/' => 'POSIX syntax [: :] belongs inside character classes (but this one isn\'t fully valid) {#} m/[:zog:]{#}\x{100}/',
487 '/[.zog.]\x{100}/' => 'POSIX syntax [. .] belongs inside character classes (but this one isn\'t implemented) {#} m/[.zog.]{#}\x{100}/',
63fbd1cb 488 '/[a-b]/' => "",
499333dc
KW
489 '/(?c)\x{100}/' => 'Useless (?c) - use /gc modifier {#} m/(?c{#})\x{100}/',
490 '/(?-c)\x{100}/' => 'Useless (?-c) - don\'t use /gc modifier {#} m/(?-c{#})\x{100}/',
491 '/(?g)\x{100}/' => 'Useless (?g) - use /g modifier {#} m/(?g{#})\x{100}/',
492 '/(?-g)\x{100}/' => 'Useless (?-g) - don\'t use /g modifier {#} m/(?-g{#})\x{100}/',
493 '/(?o)\x{100}/' => 'Useless (?o) - use /o modifier {#} m/(?o{#})\x{100}/',
494 '/(?-o)\x{100}/' => 'Useless (?-o) - don\'t use /o modifier {#} m/(?-o{#})\x{100}/',
495 '/(?g-o)\x{100}/' => [ 'Useless (?g) - use /g modifier {#} m/(?g{#}-o)\x{100}/',
496 'Useless (?-o) - don\'t use /o modifier {#} m/(?g-o{#})\x{100}/',
63fbd1cb 497 ],
499333dc
KW
498 '/(?g-c)\x{100}/' => [ 'Useless (?g) - use /g modifier {#} m/(?g{#}-c)\x{100}/',
499 'Useless (?-c) - don\'t use /gc modifier {#} m/(?g-c{#})\x{100}/',
63fbd1cb
KW
500 ],
501 # (?c) means (?g) error won't be thrown
499333dc
KW
502 '/(?o-cg)\x{100}/' => [ 'Useless (?o) - use /o modifier {#} m/(?o{#}-cg)\x{100}/',
503 'Useless (?-c) - don\'t use /gc modifier {#} m/(?o-c{#}g)\x{100}/',
63fbd1cb 504 ],
499333dc
KW
505 '/(?ogc)\x{100}/' => [ 'Useless (?o) - use /o modifier {#} m/(?o{#}gc)\x{100}/',
506 'Useless (?g) - use /g modifier {#} m/(?og{#}c)\x{100}/',
507 'Useless (?c) - use /gc modifier {#} m/(?ogc{#})\x{100}/',
63fbd1cb 508 ],
499333dc 509 '/a{1,1}?\x{100}/' => 'Useless use of greediness modifier \'?\' {#} m/a{1,1}?{#}\x{100}/',
c877af1b 510 "/(?[ [ % - % ] ])/" => "",
acdfc3b6
KW
511 "/(?[ [ : - \\x$colon_hex ] ])\\x{100}/" => "\": - \\x$colon_hex \" is more clearly written simply as \":\" {#} m/(?[ [ : - \\x$colon_hex {#}] ])\\x{100}/",
512 "/(?[ [ \\x$colon_hex - : ] ])\\x{100}/" => "\"\\x$colon_hex\ - : \" is more clearly written simply as \":\" {#} m/(?[ [ \\x$colon_hex - : {#}] ])\\x{100}/",
513 "/(?[ [ \\t - \\x$tab_hex ] ])\\x{100}/" => "\"\\t - \\x$tab_hex \" is more clearly written simply as \"\\t\" {#} m/(?[ [ \\t - \\x$tab_hex {#}] ])\\x{100}/",
514 "/(?[ [ \\x$tab_hex - \\t ] ])\\x{100}/" => "\"\\x$tab_hex\ - \\t \" is more clearly written simply as \"\\t\" {#} m/(?[ [ \\x$tab_hex - \\t {#}] ])\\x{100}/",
c877af1b
KW
515 "/(?[ [ $B_hex - C ] ])/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/(?[ [ $B_hex - C {#}] ])/",
516 "/(?[ [ A - $B_hex ] ])/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/(?[ [ A - $B_hex {#}] ])/",
517 "/(?[ [ $low_mixed_alpha - $high_mixed_alpha ] ])/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/(?[ [ $low_mixed_alpha - $high_mixed_alpha {#}] ])/",
518 "/(?[ [ $low_mixed_digit - $high_mixed_digit ] ])/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/(?[ [ $low_mixed_digit - $high_mixed_digit {#}] ])/",
46d34d0e
KW
519 "/[alnum]/" => "",
520 "/[^alnum]/" => "",
521 '/[:blank]\x{100}/' => 'POSIX syntax [: :] belongs inside character classes (but this one isn\'t fully valid) {#} m/[:blank{#}]\x{100}/',
522 '/[[:digit]]\x{100}/' => 'Assuming NOT a POSIX class since there is no terminating \':\' {#} m/[[:digit{#}]]\x{100}/', # [perl # 8904]
523 '/[[:digit:foo]\x{100}/' => 'Assuming NOT a POSIX class since there is no terminating \']\' {#} m/[[:digit:{#}foo]\x{100}/',
524 '/[[:di#it:foo]\x{100}/x' => 'Assuming NOT a POSIX class since there is no terminating \']\' {#} m/[[:di#it:{#}foo]\x{100}/',
525 '/[[:dgit]]\x{100}/' => 'Assuming NOT a POSIX class since there is no terminating \':\' {#} m/[[:dgit{#}]]\x{100}/',
526 '/[[:dgit:foo]\x{100}/' => 'Assuming NOT a POSIX class since there is no terminating \']\' {#} m/[[:dgit:{#}foo]\x{100}/',
527 '/[[:dgt]]\x{100}/' => "", # Far enough away from a real class to not be recognized as one
528 '/[[:dgt:foo]\x{100}/' => "",
529 '/[[:DIGIT]]\x{100}/' => [ 'Assuming NOT a POSIX class since the name must be all lowercase letters {#} m/[[:DIGIT{#}]]\x{100}/',
530 'Assuming NOT a POSIX class since there is no terminating \':\' {#} m/[[:DIGIT{#}]]\x{100}/',
531 ],
532 '/[[digit]\x{100}/' => [ 'Assuming NOT a POSIX class since there must be a starting \':\' {#} m/[[{#}digit]\x{100}/',
533 'Assuming NOT a POSIX class since there is no terminating \':\' {#} m/[[digit{#}]\x{100}/',
534 ],
535 '/[[alpha]]\x{100}/' => [ 'Assuming NOT a POSIX class since there must be a starting \':\' {#} m/[[{#}alpha]]\x{100}/',
536 'Assuming NOT a POSIX class since there is no terminating \':\' {#} m/[[alpha{#}]]\x{100}/',
537 ],
538 '/[[^word]\x{100}/' => [ 'Assuming NOT a POSIX class since the \'^\' must come after the colon {#} m/[[^{#}word]\x{100}/',
539 'Assuming NOT a POSIX class since there must be a starting \':\' {#} m/[[^{#}word]\x{100}/',
540 'Assuming NOT a POSIX class since there is no terminating \':\' {#} m/[[^word{#}]\x{100}/',
541 ],
542 '/[[ ^ : x d i g i t : ] ]\x{100}/' => [ 'Assuming NOT a POSIX class since no blanks are allowed in one {#} m/[[ {#}^ : x d i g i t : ] ]\x{100}/',
543 'Assuming NOT a POSIX class since the \'^\' must come after the colon {#} m/[[ ^{#} : x d i g i t : ] ]\x{100}/',
544 'Assuming NOT a POSIX class since no blanks are allowed in one {#} m/[[ ^ {#}: x d i g i t : ] ]\x{100}/',
545 'Assuming NOT a POSIX class since no blanks are allowed in one {#} m/[[ ^ : {#}x d i g i t : ] ]\x{100}/',
546 'Assuming NOT a POSIX class since no blanks are allowed in one {#} m/[[ ^ : x d i g i t : ]{#} ]\x{100}/',
547 ],
548 '/[foo:lower:]]\x{100}/' => 'Assuming NOT a POSIX class since it doesn\'t start with a \'[\' {#} m/[foo{#}:lower:]]\x{100}/',
549 '/[[;upper;]]\x{100}/' => [ 'Assuming NOT a POSIX class since a semi-colon was found instead of a colon {#} m/[[;{#}upper;]]\x{100}/',
550 'Assuming NOT a POSIX class since a semi-colon was found instead of a colon {#} m/[[;upper;]{#}]\x{100}/',
551 ],
552 '/[foo;punct;]]\x{100}/' => [ 'Assuming NOT a POSIX class since it doesn\'t start with a \'[\' {#} m/[foo{#};punct;]]\x{100}/',
553 'Assuming NOT a POSIX class since a semi-colon was found instead of a colon {#} m/[foo;{#}punct;]]\x{100}/',
554 'Assuming NOT a POSIX class since a semi-colon was found instead of a colon {#} m/[foo;punct;]{#}]\x{100}/',
555 ],
556
499333dc 557); # See comments before this for why '\x{100}' is generally needed
6fe2934b 558
b0e1d434 559# These need the character 'ネ' as a marker for mark_as_utf8()
c1d900c3
BF
560my @warnings_utf8 = mark_as_utf8(
561 'm/ネ\b*ネ/' => '\b* matches null string many times {#} m/ネ\b*{#}ネ/',
562 '/(?=ネ)*/' => '(?=ネ)* matches null string many times {#} m/(?=ネ)*{#}/',
46d34d0e 563 'm/ネ[:foo:]ネ/' => 'POSIX syntax [: :] belongs inside character classes (but this one isn\'t fully valid) {#} m/ネ[:foo:]{#}ネ/',
b0e1d434 564 '/ネ(?c)ネ/' => 'Useless (?c) - use /gc modifier {#} m/ネ(?c{#})ネ/',
c1d900c3
BF
565 '/utf8 ネ (?ogc) ネ/' => [
566 'Useless (?o) - use /o modifier {#} m/utf8 ネ (?o{#}gc) ネ/',
567 'Useless (?g) - use /g modifier {#} m/utf8 ネ (?og{#}c) ネ/',
568 'Useless (?c) - use /gc modifier {#} m/utf8 ネ (?ogc{#}) ネ/',
569 ],
570
571);
572
573push @warning, @warnings_utf8;
574
63374c78 575my @warning_only_under_strict = (
b927b7e9
KW
576 '/[\N{U+00}-\x01]\x{100}/' => 'Both or neither range ends should be Unicode {#} m/[\N{U+00}-\x01{#}]\x{100}/',
577 '/[\x00-\N{SOH}]\x{100}/' => 'Both or neither range ends should be Unicode {#} m/[\x00-\N{U+01}{#}]\x{100}/',
578 '/[\N{DEL}-\o{377}]\x{100}/' => 'Both or neither range ends should be Unicode {#} m/[\N{U+7F}-\o{377}{#}]\x{100}/',
579 '/[\o{0}-\N{U+01}]\x{100}/' => 'Both or neither range ends should be Unicode {#} m/[\o{0}-\N{U+01}{#}]\x{100}/',
580 '/[\000-\N{U+01}]\x{100}/' => 'Both or neither range ends should be Unicode {#} m/[\000-\N{U+01}{#}]\x{100}/',
581 '/[\N{DEL}-\377]\x{100}/' => 'Both or neither range ends should be Unicode {#} m/[\N{U+7F}-\377{#}]\x{100}/',
c877af1b
KW
582 '/[\N{U+00}-A]\x{100}/' => 'Ranges of ASCII printables should be some subset of "0-9", "A-Z", or "a-z" {#} m/[\N{U+00}-A{#}]\x{100}/',
583 '/[a-\N{U+FF}]\x{100}/' => 'Ranges of ASCII printables should be some subset of "0-9", "A-Z", or "a-z" {#} m/[a-\N{U+FF}{#}]\x{100}/',
b927b7e9
KW
584 '/[\N{U+00}-\a]\x{100}/' => "",
585 '/[\a-\N{U+FF}]\x{100}/' => "",
586 '/[\N{U+FF}-\x{100}]/' => 'Both or neither range ends should be Unicode {#} m/[\N{U+FF}-\x{100}{#}]/',
587 '/[\N{U+100}-\x{101}]/' => "",
c877af1b 588 "/[%-%]/" => "",
acdfc3b6
KW
589 "/[:-\\x$colon_hex]\\x{100}/" => "\":-\\x$colon_hex\" is more clearly written simply as \":\" {#} m/[:-\\x$colon_hex\{#}]\\x{100}/",
590 "/[\\x$colon_hex-:]\\x{100}/" => "\"\\x$colon_hex-:\" is more clearly written simply as \":\" {#} m/[\\x$colon_hex\-:{#}]\\x{100}/",
591 "/[\\t-\\x$tab_hex]\\x{100}/" => "\"\\t-\\x$tab_hex\" is more clearly written simply as \"\\t\" {#} m/[\\t-\\x$tab_hex\{#}]\\x{100}/",
592 "/[\\x$tab_hex-\\t]\\x{100}/" => "\"\\x$tab_hex-\\t\" is more clearly written simply as \"\\t\" {#} m/[\\x$tab_hex\-\\t{#}]\\x{100}/",
c877af1b
KW
593 "/[$B_hex-C]/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/[$B_hex-C{#}]/",
594 "/[A-$B_hex]/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/[A-$B_hex\{#}]/",
595 "/[$low_mixed_alpha-$high_mixed_alpha]/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/[$low_mixed_alpha-$high_mixed_alpha\{#}]/",
596 "/[$low_mixed_digit-$high_mixed_digit]/" => "Ranges of ASCII printables should be some subset of \"0-9\", \"A-Z\", or \"a-z\" {#} m/[$low_mixed_digit-$high_mixed_digit\{#}]/",
597);
598
599my @warning_utf8_only_under_strict = mark_as_utf8(
600 '/ネ[᪉-᪐]/; #no latin1' => "Ranges of digits should be from the same group of 10 {#} m/ネ[᪉-᪐{#}]/",
601 '/ネ(?[ [ ᪉ - ᪐ ] ])/; #no latin1' => "Ranges of digits should be from the same group of 10 {#} m/ネ(?[ [ ᪉ - ᪐ {#}] ])/",
602 '/ネ[᧙-᧚]/; #no latin1' => "Ranges of digits should be from the same group of 10 {#} m/ネ[᧙-᧚{#}]/",
603 '/ネ(?[ [ ᧙ - ᧚ ] ])/; #no latin1' => "Ranges of digits should be from the same group of 10 {#} m/ネ(?[ [ ᧙ - ᧚ {#}] ])/",
63374c78
KW
604);
605
c877af1b
KW
606push @warning_only_under_strict, @warning_utf8_only_under_strict;
607
6fe2934b 608my @experimental_regex_sets = (
6d24e9d4 609 '/(?[ \t ])/' => 'The regex_sets feature is experimental {#} m/(?[{#} \t ])/',
c1d900c3
BF
610 'use utf8; /utf8 ネ (?[ [\tネ] ])/' => do { use utf8; 'The regex_sets feature is experimental {#} m/utf8 ネ (?[{#} [\tネ] ])/' },
611 '/noutf8 ネ (?[ [\tネ] ])/' => 'The regex_sets feature is experimental {#} m/noutf8 ネ (?[{#} [\tネ] ])/',
b45f050a
JF
612);
613
63fbd1cb 614my @deprecated = (
412f55bb
KW
615 '/\w{/' => 'Unescaped left brace in regex is deprecated, passed through {#} m/\w{{#}/',
616 '/\q{/' => [
617 'Unrecognized escape \q{ passed through {#} m/\q{{#}/',
618 'Unescaped left brace in regex is deprecated, passed through {#} m/\q{{#}/'
619 ],
620 '/:{4,a}/' => 'Unescaped left brace in regex is deprecated, passed through {#} m/:{{#}4,a}/',
cc4d09e1
KW
621 '/abc/xix' => 'Having more than one /x regexp modifier is deprecated',
622 '/(?xmsixp:abc)/' => 'Having more than one /x regexp modifier is deprecated',
623 '/(?xmsixp)abc/' => 'Having more than one /x regexp modifier is deprecated',
624 '/(?xxxx:abc)/' => 'Having more than one /x regexp modifier is deprecated',
63fbd1cb
KW
625);
626
67cdf558
KW
627for my $strict ("", "use re 'strict';") {
628
629 # First time just use @death; but under strict we add the things that fail
630 # there. Doing it this way makes sure that 'strict' doesnt change the
631 # things that are already fatal when not under strict.
632 if ($strict) {
633 for (my $i = 0; $i < @death_only_under_strict; $i += 3) {
634 push @death, $death_only_under_strict[$i], # The regex
635 $death_only_under_strict[$i+2]; # The fatal msg
636 }
637 for (my $i = 0; $i < @death_utf8_only_under_strict; $i += 3) {
638
639 # Same with the utf8 versions
640 push @death, mark_as_utf8($death_utf8_only_under_strict[$i],
641 $death_utf8_only_under_strict[$i+2]);
642 }
643 }
d6609144
KW
644 for (my $i = 0; $i < @death; $i += 2) {
645 my $regex = $death[$i];
646 my $expect = fixup_expect($death[$i+1]);
647 no warnings 'experimental::regex_sets';
648 no warnings 'experimental::re_strict';
d6609144
KW
649
650 warning_is(sub {
651 my $eval_string = "$strict $regex";
652 $_ = "x";
653 eval $eval_string;
654 like($@, qr/\Q$expect/, $eval_string);
655 }, undef, "... and died without any other warnings");
656 }
67cdf558 657}
b45f050a 658
63374c78
KW
659for my $strict ("", "no warnings 'experimental::re_strict'; use re 'strict';") {
660 my @warning_tests = @warning;
67cdf558 661
63374c78
KW
662 # Build the tests for @warning. Use the strict/non-strict versions
663 # appropriately.
664 if ($strict) {
665 push @warning_tests, @warning_only_under_strict;
666 }
667 else {
668 for (my $i = 0; $i < @warning_only_under_strict; $i += 2) {
669 if ($warning_only_under_strict[$i] =~ /\Q(?[/) {
670 push @warning_tests, $warning_only_under_strict[$i], # The regex
671 $warning_only_under_strict[$i+1];
672 }
673 else {
674 push @warning_tests, $warning_only_under_strict[$i], # The regex
675 ""; # No warning because not strict
676 }
677 }
67cdf558 678 for (my $i = 0; $i < @death_only_under_strict; $i += 3) {
63374c78
KW
679 push @warning_tests, $death_only_under_strict[$i], # The regex
680 $death_only_under_strict[$i+1]; # The warning
67cdf558
KW
681 }
682 for (my $i = 0; $i < @death_utf8_only_under_strict; $i += 3) {
63374c78 683 push @warning_tests, mark_as_utf8($death_utf8_only_under_strict[$i],
d6609144 684 $death_utf8_only_under_strict[$i+1]);
67cdf558
KW
685 }
686 }
d6609144 687
63374c78 688 foreach my $ref (\@warning_tests, \@experimental_regex_sets, \@deprecated) {
d6609144 689 my $warning_type;
63374c78 690 my $turn_off_warnings = "";
d6609144 691 my $default_on;
63374c78 692 if ($ref == \@warning_tests) {
d6609144 693 $warning_type = 'regexp, digit';
63374c78 694 $turn_off_warnings = "no warnings 'experimental::regex_sets';";
d6609144 695 $default_on = $strict;
af01601c 696 }
d6609144
KW
697 elsif ($ref == \@deprecated) {
698 $warning_type = 'regexp, deprecated';
699 $default_on = 1;
700 }
701 else {
702 $warning_type = 'experimental::regex_sets';
703 $default_on = 1;
704 }
705 for (my $i = 0; $i < @$ref; $i += 2) {
706 my $regex = $ref->[$i];
707 my @expect = fixup_expect($ref->[$i+1]);
63374c78
KW
708
709 # A length-1 array with an empty warning means no warning gets
710 # generated at all.
711 undef @expect if @expect == 1 && $expect[0] eq "";
712
d6609144
KW
713 {
714 $_ = "x";
715 eval "$strict no warnings; $regex";
af01601c 716 }
d6609144
KW
717 if (is($@, "", "$strict $regex did not die")) {
718 my @got = capture_warnings(sub {
719 $_ = "x";
63374c78 720 eval "$strict $turn_off_warnings $regex" });
d6609144
KW
721 my $count = @expect;
722 if (! is(scalar @got, scalar @expect,
723 "... and gave expected number ($count) of warnings"))
724 {
725 if (@got < @expect) {
726 $count = @got;
727 note "Expected warnings not gotten:\n\t" . join "\n\t",
728 @expect[$count .. $#expect];
729 }
730 else {
731 note "Unexpected warnings gotten:\n\t" . join("\n\t",
732 @got[$count .. $#got]);
733 }
b0b90d25 734 }
d6609144
KW
735 foreach my $i (0 .. $count - 1) {
736 if (! like($got[$i], qr/\Q$expect[$i]/,
737 "... and gave expected warning"))
738 {
739 chomp($got[$i]);
740 chomp($expect[$i]);
741 diag("GOT\n'$got[$i]'\nEXPECT\n'$expect[$i]'");
67cdf558
KW
742 }
743 else {
d6609144
KW
744 ok (0 == capture_warnings(sub {
745 $_ = "x";
746 eval "$strict no warnings '$warning_type'; $regex;" }
747 ),
748 "... and turning off '$warning_type' warnings suppressed it");
749
750 # Test that whether the warning is on by default is
751 # correct. This test relies on the fact that we
752 # are outside the scope of any ‘use warnings’.
753 local $^W;
754 my @warns = capture_warnings(sub { $_ = "x";
755 eval "$strict $regex" });
63374c78
KW
756 # Warning should be on as well if is testing
757 # '(?[...])' which turns on strict
758 if ($default_on || grep { $_ =~ /\Q(?[/ } @expect ) {
d6609144
KW
759 ok @warns > 0, "... and the warning is on by default";
760 }
761 else {
762 ok @warns == 0, "... and the warning is off by default";
763 }
67cdf558 764 }
af01601c
KW
765 }
766 }
b42857f3 767 }
6fe2934b
KW
768 }
769}
b45f050a 770
cb79f740 771done_testing();