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LibRegex: Make parse_disjunction() consume all disjunctions in one frame
This helps us not blow up when too many disjunctions are chained togther in the regex we're parsing. Fixes #12615.
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627bbee055
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2 changed files with 33 additions and 21 deletions
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@ -498,6 +498,8 @@ TEST_CASE(posix_extended_nested_capture_group)
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EXPECT_EQ(result.capture_group_matches[0][2].view, "llo"sv);
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}
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auto parse_test_case_long_disjunction_chain = String::repeated("a|"sv, 10000);
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TEST_CASE(ECMA262_parse)
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{
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struct _test {
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@ -506,7 +508,7 @@ TEST_CASE(ECMA262_parse)
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regex::ECMAScriptFlags flags {};
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};
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constexpr _test tests[] {
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_test const tests[] {
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{ "^hello.$"sv },
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{ "^(hello.)$"sv },
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{ "^h{0,1}ello.$"sv },
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@ -599,7 +601,8 @@ TEST_CASE(ECMA262_parse)
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{ "(?<$$_$$>a)"sv },
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{ "(?<ÿ>a)"sv },
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{ "(?<𝓑𝓻𝓸𝔀𝓷>a)"sv },
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{ "((?=lg)?[vl]k\\-?\\d{3}) bui| 3\\.[-\\w; ]{10}lg?-([06cv9]{3,4})"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended } // #12373, quantifiable assertions.
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{ "((?=lg)?[vl]k\\-?\\d{3}) bui| 3\\.[-\\w; ]{10}lg?-([06cv9]{3,4})"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended }, // #12373, quantifiable assertions.
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{ parse_test_case_long_disjunction_chain.view() }, // A whole lot of disjunctions, should not overflow the stack.
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};
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for (auto& test : tests) {
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