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C++: Fix C++20 concept related class extensions#20026

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jketema merged 1 commit intogithub:mainfrom
jketema:concept-fix
Jul 13, 2025
Merged

C++: Fix C++20 concept related class extensions#20026
jketema merged 1 commit intogithub:mainfrom
jketema:concept-fix

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@jketema jketema commented Jul 11, 2025

Noted by @MathiasVP on Slack.

  • RequirementExpr was missing a charpred, or wasn't abstract. I added a charpred.
  • NestedRequirementExpr accidentally didn't extend RequirementExpr
  • ConceptIdExpr accidentally did extend RequirementExpr (while it can occur in other contexts)

@github-actions github-actions Bot added the C++ label Jul 11, 2025
@jketema jketema added the no-change-note-required This PR does not need a change note label Jul 11, 2025
@jketema jketema marked this pull request as ready for review July 11, 2025 11:45
Copilot AI review requested due to automatic review settings July 11, 2025 11:45
@jketema jketema requested a review from a team as a code owner July 11, 2025 11:45
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Pull Request Overview

This PR fixes C++20 concept-related class extensions in the CodeQL library by correcting the inheritance hierarchy for requirement expressions. The changes ensure that all requirement expression classes properly inherit from RequirementExpr and eliminate redundant parent checks.

Key changes:

  • Adds constructor logic to RequirementExpr to establish proper parent-child relationships
  • Refactors requirement expression classes to use the base class constructor instead of duplicating parent checks
  • Corrects the inheritance hierarchy for NestedRequirementExpr and ConceptIdExpr

Comment thread cpp/ql/lib/semmle/code/cpp/Concept.qll
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DCA is happy and LGTM 👍

@jketema jketema merged commit d82d5c2 into github:main Jul 13, 2025
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@jketema jketema deleted the concept-fix branch July 13, 2025 08:20
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3 participants