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codeql/cpp/ql/lib/change-notes/2026-07-16-cpp-regex-flow-configs.md
copilot-swe-agent[bot] f72bad70f9 Add C++ regex flow modeling and construction-site flags (Phase 2)
2026-07-16 11:21:29 +00:00

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  • Added internal C++ regex usage and flow modeling (semmle.code.cpp.regex.RegexFlowConfigs). The RegexTreeView RegExp class now only matches StringLiterals that flow to a std::basic_regex construction/assignment or a std::regex_match/std::regex_search/std::regex_replace/std::regex_iterator/std::regex_token_iterator call. Construction-site flags in std::regex_constants are detected (icase, multiline, and the grammar flags), including bitwise-| combinations. Literals constructed with an explicit non-ECMAScript grammar flag (basic, extended, awk, grep, egrep) are excluded from the ECMAScript-only parser. No new queries are added in this release.