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[perl5.git] / t / re / reg_mesg.t
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1#!./perl -w
2
3BEGIN {
4 chdir 't' if -d 't';
20822f61 5 @INC = '../lib';
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6 require './test.pl';
7 eval 'require Config'; # assume defaults if this fails
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8}
9
cb79f740 10use strict;
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11
12##
13## If the markers used are changed (search for "MARKER1" in regcomp.c),
cb79f740 14## update only these two regexs, and leave the {#} in the @death/@warning
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15## arrays below. The {#} is a meta-marker -- it marks where the marker should
16## go.
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17##
18sub fixup_expect {
19 my $expect = shift;
20 $expect =~ s/{\#}/<-- HERE/;
21 $expect =~ s/{\#}/ <-- HERE /;
22 $expect .= " at ";
23 return $expect;
24}
b45f050a 25
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26my $inf_m1 = ($Config::Config{reg_infty} || 32767) - 1;
27my $inf_p1 = $inf_m1 + 2;
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28
29##
30## Key-value pairs of code/error of code that should have fatal errors.
31##
32my @death =
33(
7253e4e3 34 '/[[=foo=]]/' => 'POSIX syntax [= =] is reserved for future extensions in regex; marked by {#} in m/[[=foo=]{#}]/',
b45f050a 35
58e23c8d 36 '/(?<= .*)/' => 'Variable length lookbehind not implemented in regex m/(?<= .*)/',
b45f050a 37
58e23c8d 38 '/(?<= x{1000})/' => 'Lookbehind longer than 255 not implemented in regex m/(?<= x{1000})/',
b45f050a 39
7253e4e3 40 '/(?@)/' => 'Sequence (?@...) not implemented in regex; marked by {#} in m/(?@{#})/',
b45f050a 41
9da1dd8f 42 '/(?{ 1/' => 'Missing right curly or square bracket',
b45f050a 43
7253e4e3 44 '/(?(1x))/' => 'Switch condition not recognized in regex; marked by {#} in m/(?(1x{#}))/',
b45f050a 45
7253e4e3 46 '/(?(1)x|y|z)/' => 'Switch (?(condition)... contains too many branches in regex; marked by {#} in m/(?(1)x|y|{#}z)/',
b45f050a 47
7253e4e3 48 '/(?(x)y|x)/' => 'Unknown switch condition (?(x) in regex; marked by {#} in m/(?({#}x)y|x)/',
b45f050a 49
7253e4e3 50 '/(?/' => 'Sequence (? incomplete in regex; marked by {#} in m/(?{#}/',
b45f050a 51
7253e4e3 52 '/(?;x/' => 'Sequence (?;...) not recognized in regex; marked by {#} in m/(?;{#}x/',
1f4f6bf1 53 '/(?<;x/' => 'Group name must start with a non-digit word character in regex; marked by {#} in m/(?<;{#}x/',
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54 '/(?\ix/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}ix/',
55 '/(?\mx/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}mx/',
56 '/(?\:x/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}:x/',
57 '/(?\=x/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}=x/',
58 '/(?\!x/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}!x/',
59 '/(?\<=x/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}<=x/',
60 '/(?\<!x/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}<!x/',
61 '/(?\>x/' => 'Sequence (?\...) not recognized in regex; marked by {#} in m/(?\{#}>x/',
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62 '/(?^-i:foo)/' => 'Sequence (?^-...) not recognized in regex; marked by {#} in m/(?^-{#}i:foo)/',
63 '/(?^-i)foo/' => 'Sequence (?^-...) not recognized in regex; marked by {#} in m/(?^-{#}i)foo/',
64 '/(?^d:foo)/' => 'Sequence (?^d...) not recognized in regex; marked by {#} in m/(?^d{#}:foo)/',
65 '/(?^d)foo/' => 'Sequence (?^d...) not recognized in regex; marked by {#} in m/(?^d{#})foo/',
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66 '/(?^lu:foo)/' => 'Regexp modifiers "l" and "u" are mutually exclusive in regex; marked by {#} in m/(?^lu{#}:foo)/',
67 '/(?^lu)foo/' => 'Regexp modifiers "l" and "u" are mutually exclusive in regex; marked by {#} in m/(?^lu{#})foo/',
68'/(?da:foo)/' => 'Regexp modifiers "d" and "a" are mutually exclusive in regex; marked by {#} in m/(?da{#}:foo)/',
69'/(?lil:foo)/' => 'Regexp modifier "l" may not appear twice in regex; marked by {#} in m/(?lil{#}:foo)/',
70'/(?aaia:foo)/' => 'Regexp modifier "a" may appear a maximum of twice in regex; marked by {#} in m/(?aaia{#}:foo)/',
9442e3b8 71'/(?i-l:foo)/' => 'Regexp modifier "l" may not appear after the "-" in regex; marked by {#} in m/(?i-l{#}:foo)/',
cc74c5bd 72
7253e4e3 73 '/((x)/' => 'Unmatched ( in regex; marked by {#} in m/({#}(x)/',
b45f050a 74
7253e4e3 75 "/x{$inf_p1}/" => "Quantifier in {,} bigger than $inf_m1 in regex; marked by {#} in m/x{{#}$inf_p1}/",
b45f050a 76
b45f050a 77
7253e4e3 78 '/x**/' => 'Nested quantifiers in regex; marked by {#} in m/x**{#}/',
b45f050a 79
7253e4e3 80 '/x[/' => 'Unmatched [ in regex; marked by {#} in m/x[{#}/',
b45f050a 81
7253e4e3 82 '/*/', => 'Quantifier follows nothing in regex; marked by {#} in m/*{#}/',
b45f050a 83
7253e4e3 84 '/\p{x/' => 'Missing right brace on \p{} in regex; marked by {#} in m/\p{{#}x/',
b45f050a 85
169da838 86 '/[\p{x]/' => 'Missing right brace on \p{} in regex; marked by {#} in m/[\p{{#}x]/',
b45f050a 87
7253e4e3 88 '/(x)\2/' => 'Reference to nonexistent group in regex; marked by {#} in m/(x)\2{#}/',
b45f050a 89
40809656 90 'my $m = "\\\"; $m =~ $m', => 'Trailing \ in regex m/\/',
b45f050a 91
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92 '/\x{1/' => 'Missing right brace on \x{} in regex; marked by {#} in m/\x{1{#}/',
93 '/\x{X/' => 'Missing right brace on \x{} in regex; marked by {#} in m/\x{{#}X/',
b45f050a 94
169da838 95 '/[\x{X]/' => 'Missing right brace on \x{} in regex; marked by {#} in m/[\x{{#}X]/',
b8de99ca 96 '/[\x{A]/' => 'Missing right brace on \x{} in regex; marked by {#} in m/[\x{A{#}]/',
b45f050a 97
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98 '/\o{1/' => 'Missing right brace on \o{ in regex; marked by {#} in m/\o{1{#}/',
99 '/\o{X/' => 'Missing right brace on \o{ in regex; marked by {#} in m/\o{{#}X/',
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100
101 '/[\o{X]/' => 'Missing right brace on \o{ in regex; marked by {#} in m/[\o{{#}X]/',
b8de99ca 102 '/[\o{7]/' => 'Missing right brace on \o{ in regex; marked by {#} in m/[\o{7{#}]/',
9ffc7554 103
7253e4e3 104 '/[[:barf:]]/' => 'POSIX class [:barf:] unknown in regex; marked by {#} in m/[[:barf:]{#}]/',
b45f050a 105
7253e4e3 106 '/[[=barf=]]/' => 'POSIX syntax [= =] is reserved for future extensions in regex; marked by {#} in m/[[=barf=]{#}]/',
b45f050a 107
7253e4e3 108 '/[[.barf.]]/' => 'POSIX syntax [. .] is reserved for future extensions in regex; marked by {#} in m/[[.barf.]{#}]/',
b45f050a 109
7253e4e3 110 '/[z-a]/' => 'Invalid [] range "z-a" in regex; marked by {#} in m/[z-a{#}]/',
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111
112 '/\p/' => 'Empty \p{} in regex; marked by {#} in m/\p{#}/',
113
114 '/\P{}/' => 'Empty \P{} in regex; marked by {#} in m/\P{{#}}/',
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115);
116
117##
118## Key-value pairs of code/error of code that should have non-fatal warnings.
119##
cb79f740 120my @warning = (
7253e4e3 121 'm/\b*/' => '\b* matches null string many times in regex; marked by {#} in m/\b*{#}/',
b45f050a 122
7253e4e3 123 'm/[:blank:]/' => 'POSIX syntax [: :] belongs inside character classes in regex; marked by {#} in m/[:blank:]{#}/',
b45f050a 124
7253e4e3 125 "m'[\\y]'" => 'Unrecognized escape \y in character class passed through in regex; marked by {#} in m/[\y{#}]/',
b45f050a 126
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127 'm/[a-\d]/' => 'False [] range "a-\d" in regex; marked by {#} in m/[a-\d{#}]/',
128 'm/[\w-x]/' => 'False [] range "\w-" in regex; marked by {#} in m/[\w-{#}x]/',
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129 'm/[a-\pM]/' => 'False [] range "a-\pM" in regex; marked by {#} in m/[a-\pM{#}]/',
130 'm/[\pM-x]/' => 'False [] range "\pM-" in regex; marked by {#} in m/[\pM-{#}x]/',
7253e4e3 131 "m'\\y'" => 'Unrecognized escape \y passed through in regex; marked by {#} in m/\y{#}/',
31c15ce5 132 '/x{3,1}/' => 'Quantifier {n,m} with n > m can\'t match in regex; marked by {#} in m/x{3,1}{#}/',
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133);
134
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135while (my ($regex, $expect) = splice @death, 0, 2) {
136 my $expect = fixup_expect($expect);
40809656 137 # skip the utf8 test on EBCDIC since they do not die
cb79f740 138 next if $::IS_EBCDIC && $regex =~ /utf8/;
b45f050a 139
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140 warning_is(sub {
141 $_ = "x";
142 eval $regex;
143 like($@, qr/\Q$expect/);
144 }, undef, "$regex died without any other warnings");
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145}
146
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147while (my ($regex, $expect) = splice @warning, 0, 2) {
148 my $expect = fixup_expect($expect);
149 warning_like(sub {
150 $_ = "x";
151 eval $regex;
152 is($@, '', "$regex did not die");
153 }, qr/\Q$expect/);
154}
b45f050a 155
cb79f740 156done_testing();