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LibRegex: Generate a 'Compare' op for empty character classes

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Otherwise it would match zero-length strings.
Fixes #6256.
This commit is contained in:
AnotherTest 2021-04-12 10:58:59 +04:30 • committed by Andreas Kling
commit 5a14f7ea2f
Notes: sideshowbarker 2024-07-18 20:30:21 +09:00
2 changed files with 15 additions and 0 deletions
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3
Userland/Libraries/LibRegex/RegexParser.cpp
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@ -1418,6 +1418,9 @@ bool ECMA262Parser::parse_character_class(ByteCode& stack, size_t& match_length_
if (match(TokenType::RightBracket)) {
consume();
// Should only have at most an 'Inverse'
VERIFY(compares.size() <= 1);
stack.insert_bytecode_compare_values(move(compares));
return true;
}