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Fix infinite loop in parser.

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Fixes: https://github.com/boostorg/regex/issues/140.
This commit is contained in:
jzmaddock
2021-06-26 13:52:23 +01:00
parent 194ab4d646
commit d312a085b1
3 changed files with 8 additions and 0 deletions
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3
include/boost/regex/v4/basic_regex_parser.hpp
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@ -1124,6 +1124,9 @@ bool basic_regex_parser<charT, traits>::parse_repeat(std::size_t low, std::size_
} }
else else
contin = false; contin = false;
break;
default:
contin = false;
} }
} }
else else

3
include/boost/regex/v5/basic_regex_parser.hpp
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@ -1098,6 +1098,9 @@ bool basic_regex_parser<charT, traits>::parse_repeat(std::size_t low, std::size_
} }
else else
contin = false; contin = false;
break;
default:
contin = false;
} }
} }
else else

2
test/regress/test_perl_ex.cpp
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@ -58,6 +58,8 @@ void test_independent_subs()
TEST_REGEX_SEARCH("word (?>[a-zA-Z0-9]+ ){0,30}otherword", perl, "word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I really really hope otherword", match_default, make_array(-2, -2)); TEST_REGEX_SEARCH("word (?>[a-zA-Z0-9]+ ){0,30}otherword", perl, "word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I really really hope otherword", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("((?>Z)+|A)+", perl, "ZABCDEFG", match_default, make_array(0, 2, 1, 2, -2, -2)); TEST_REGEX_SEARCH("((?>Z)+|A)+", perl, "ZABCDEFG", match_default, make_array(0, 2, 1, 2, -2, -2));
TEST_INVALID_REGEX("((?>)+|A)+", perl); TEST_INVALID_REGEX("((?>)+|A)+", perl);
// Bug https://github.com/boostorg/regex/issues/140:
TEST_REGEX_SEARCH("1?+(?#)1", perl, "22113", match_default, make_array(2, 4, -2, -2));
} }
void test_conditionals() void test_conditionals()