C++: Remove the BMN filter from some queries, but reduce precision to medium #20410
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Remove the `not any(Compilation c).buildModeNone() and` clause from:
cpp/wrong-type-format-argument
cpp/comparison-with-wider-type
cpp/integer-multiplication-cast-to-long
cpp/implicit-function-declaration
cpp/suspicious-add-sizeof
but reduce their precision to `medium`.
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Queries affected:
cpp/wrong-type-format-argument
cpp/comparison-with-wider-type
cpp/integer-multiplication-cast-to-long
cpp/implicit-function-declaration
cpp/suspicious-add-sizeof
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Pull Request Overview
This PR removes the BMN (Build Mode None) filter from five C++ CodeQL queries while reducing their precision from "high" to "medium". The changes enable these queries to now run on projects built with build-mode: none but at a lower confidence level.
- Removes
not any(Compilation c).buildModeNone() andclause from 5 queries - Changes precision metadata from
@precision highto@precision medium - Updates query suites to exclude 4 of these queries from code-scanning
Reviewed Changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| cpp/ql/src/change-notes/2025-09-11-queries-demoted.md | Documents the precision reduction and suite changes for affected queries |
| cpp/ql/src/Security/CWE/CWE-468/SuspiciousAddWithSizeof.ql | Removes BMN filter and reduces precision to medium |
| cpp/ql/src/Security/CWE/CWE-190/ComparisonWithWiderType.ql | Removes BMN filter and reduces precision to medium |
| cpp/ql/src/Likely Bugs/Underspecified Functions/ImplicitFunctionDeclaration.ql | Removes BMN filter and reduces precision to medium |
| cpp/ql/src/Likely Bugs/Format/WrongTypeFormatArguments.ql | Removes BMN filter and reduces precision to medium |
| cpp/ql/src/Likely Bugs/Arithmetic/IntMultToLong.ql | Removes BMN filter and reduces precision to medium |
| cpp/ql/integration-tests/query-suite/cpp-code-scanning.qls.expected | Removes 4 queries from the code-scanning suite |
| category: majorAnalysis | ||
| --- | ||
| * The queries `cpp/wrong-type-format-argument`, `cpp/comparison-with-wider-type`, `cpp/integer-multiplication-cast-to-long`, `cpp/implicit-function-declaration` and `cpp/suspicious-add-sizeof` have had their precisions reduced from `high` to `medium`. They will also now give alerts for projects built with `build-mode: none`. | ||
| * The queries `cpp/wrong-type-format-argument`, `cpp/comparison-with-wider-type`, `cpp/integer-multiplication-cast-to-long` and `cpp/suspicious-add-sizeof` are no longer included in the `code-scanning` suite. |
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The change note lists only 4 queries as being removed from the code-scanning suite, but the description mentions 5 queries total. The cpp/implicit-function-declaration query is missing from this list, though it appears this query was never in the code-scanning suite to begin with. Consider clarifying this discrepancy or adding a note that cpp/implicit-function-declaration was not previously included in the suite.
Suggested change
| * The queries `cpp/wrong-type-format-argument`, `cpp/comparison-with-wider-type`, `cpp/integer-multiplication-cast-to-long` and `cpp/suspicious-add-sizeof` are no longer included in the `code-scanning` suite. | |
| * The queries `cpp/wrong-type-format-argument`, `cpp/comparison-with-wider-type`, `cpp/integer-multiplication-cast-to-long` and `cpp/suspicious-add-sizeof` are no longer included in the `code-scanning` suite. | |
| * Note: `cpp/implicit-function-declaration` was not previously included in the `code-scanning` suite. |
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jketema
approved these changes
Sep 11, 2025
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Remove the
not any(Compilation c).buildModeNone() andclause from:but reduce their precision to
medium.