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Title: C++ regex parse tree and RegexTreeViewSig implementation (Phase 1 of ReDoS support) by Copilot · Pull Request #22200 · github/codeql · GitHub

Open Graph Title: C++ regex parse tree and RegexTreeViewSig implementation (Phase 1 of ReDoS support) by Copilot · Pull Request #22200 · github/codeql

X Title: C++ regex parse tree and RegexTreeViewSig implementation (Phase 1 of ReDoS support) by Copilot · Pull Request #22200 · github/codeql

Description: CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security - C++ regex parse tree and RegexTreeViewSig implementation (Phase 1 of ReDoS support) by Copilot · Pull Request #22200 · github/codeql

Open Graph Description: C++ (codeql/cpp-all) has no regex parse tree and no RegexTreeViewSig implementation, blocking instantiation of the shared codeql/regex ReDoS engines. This PR adds the self-contained foundation — pa...

X Description: C++ (codeql/cpp-all) has no regex parse tree and no RegexTreeViewSig implementation, blocking instantiation of the shared codeql/regex ReDoS engines. This PR adds the self-contained foundation — pa...

Opengraph URL: https://github.com/github/codeql/pull/22200

X: @github

direct link

Domain: Github.com

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Revert "Resolve dead-code alerts: export RegexPatternFlowConfig module"https://Github.com/github/codeql/pull/22200/commits/09938f05310a0fbfd96fb41c4334b72ea9954f5e
09938f0https://Github.com/github/codeql/pull/22200/commits/09938f05310a0fbfd96fb41c4334b72ea9954f5e
cc95e25https://github.com/github/codeql/commit/cc95e25e56adf726b6ae88c1d45e7ff83e08d7db
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jketemahttps://Github.com/jketema
July 17, 2026 18:09https://Github.com/github/codeql/pull/22200#event-28135482133
started workhttps://github.com/github/codeql/sessions/17674346-cadd-429e-8867-ec8fa6fac5b8
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July 17, 2026 18:15https://Github.com/github/codeql/pull/22200#event-28135690185
View session https://github.com/github/codeql/sessions/17674346-cadd-429e-8867-ec8fa6fac5b8
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Convert ReDoS query tests to inline test expectationshttps://Github.com/github/codeql/pull/22200/commits/4be7ff07c399951628ffd7ec80004fbdb024e611
4be7ff0https://Github.com/github/codeql/pull/22200/commits/4be7ff07c399951628ffd7ec80004fbdb024e611
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July 17, 2026 18:28https://Github.com/github/codeql/pull/22200#event-28136157669
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Remove redundant CompileCheck.ql to resolve dead-code alertshttps://Github.com/github/codeql/pull/22200/commits/2bab816913e2f11124beab5849aebc332d0c1ea6
2bab816https://Github.com/github/codeql/pull/22200/commits/2bab816913e2f11124beab5849aebc332d0c1ea6
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Add CWE-1333 ReDoS queries to cpp query-suite .expected snapshotshttps://Github.com/github/codeql/pull/22200/commits/c51dcddee7f54231c5b72c2177a5250d3ea19ca9
c51dcddhttps://Github.com/github/codeql/pull/22200/commits/c51dcddee7f54231c5b72c2177a5250d3ea19ca9
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July 17, 2026 19:08https://Github.com/github/codeql/pull/22200#event-28137634750
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July 20, 2026 09:16https://Github.com/github/codeql/pull/22200#event-28203665451
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Add location tests for the C++ regex parse-tree viewhttps://Github.com/github/codeql/pull/22200/commits/9fdf8b7b8ea9109c3cbfd1fb93d02f9f0bc523f4
9fdf8b7https://Github.com/github/codeql/pull/22200/commits/9fdf8b7b8ea9109c3cbfd1fb93d02f9f0bc523f4
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Fix C++ regex term source locations for raw and encoding-prefixed lit…https://Github.com/github/codeql/pull/22200/commits/db5869839411116dc7d6f403f6fbf709e3a916ea
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View reviewed changes https://Github.com/github/codeql/pull/22200/files/db5869839411116dc7d6f403f6fbf709e3a916ea
cpp/ql/lib/semmle/code/cpp/regex/RegexTreeView.qllhttps://Github.com/github/codeql/pull/22200/files/db5869839411116dc7d6f403f6fbf709e3a916ea#diff-f9d8c414bc79e0386861077441d1bb1c9b6db7bb0563cba2116e168b0c4516a3
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View session https://github.com/github/codeql/sessions/ca677de7-b16e-49b4-803f-9f83195e5f70
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Extract C++ regex grammar/flag knobs into flow-free RegexGrammar modulehttps://Github.com/github/codeql/pull/22200/commits/4fab077bbec42f05c12d7d6bcd7aca121dac4a1b
4fab077https://Github.com/github/codeql/pull/22200/commits/4fab077bbec42f05c12d7d6bcd7aca121dac4a1b
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Move StdBasicRegex to shared StdRegex module; return ExploitableStrin…https://Github.com/github/codeql/pull/22200/commits/645f2fdc3d9585cbceb1500e98b502010bbdad45
645f2fdhttps://Github.com/github/codeql/pull/22200/commits/645f2fdc3d9585cbceb1500e98b502010bbdad45
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View session https://github.com/github/codeql/sessions/d5c0a01a-4344-4c13-9f4c-12cafa3802fd
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Remove duplicated ReDoS fast-path filter from RegexGrammar; narrow at…https://Github.com/github/codeql/pull/22200/commits/ebecc19f8195d44bcc25ede0398225e7b430330a
ebecc19https://Github.com/github/codeql/pull/22200/commits/ebecc19f8195d44bcc25ede0398225e7b430330a
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July 20, 2026 13:09https://Github.com/github/codeql/pull/22200#event-28213326775
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Jul 21, 2026 https://Github.com/github/codeql/pull/22200#ref-commit-76e3118
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Commit 2: Fix \0 escape parsinghttps://Github.com/github/codeql/commit/76e3118abaf9ca7b9b9a98c79e4310d52f675ffd
76e3118https://Github.com/github/codeql/commit/76e3118abaf9ca7b9b9a98c79e4310d52f675ffd
#22200https://github.com/github/codeql/pull/22200
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Jul 23, 2026 https://Github.com/github/codeql/pull/22200#ref-pullrequest-4957637036
C++ regex parser: align with std::regex ECMAScript grammar and fix literal-location mapping #22227 https://Github.com/github/codeql/pull/22227
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