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LibRegex: Stop trying to read a character class when no tokens remain

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e.g. in "[".
Fixes #4186.
This commit is contained in:
AnotherTest 2020-11-28 09:27:59 +03:30 committed by Andreas Kling
parent 2adcdbcc1e
commit e83e7a03c2
Notes: sideshowbarker 2024-07-19 01:13:50 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/e83e7a03c24
Pull-request: https://github.com/SerenityOS/serenity/pull/4194
Issue: https://github.com/SerenityOS/serenity/issues/4186
Issue: https://github.com/SerenityOS/serenity/issues/4189
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5
Libraries/LibRegex/RegexParser.cpp
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@ -1236,6 +1236,11 @@ bool ECMA262Parser::parse_nonempty_class_ranges(Vector<CompareTypeAndValuePair>&
};
while (!match(TokenType::RightBracket)) {
if (match(TokenType::Eof)) {
set_error(Error::MismatchingBracket);
return false;
}
auto first_atom = read_class_atom();
if (!first_atom.has_value())
return false;