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Merge pull request #21514 from geoffw0/suspicioussizeof

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C++: Fix an issue with cpp/suspicious-add-sizeof in BMN databases
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Geoffrey White
2026-03-20 09:41:39 +00:00
committed by GitHub
parent be746b775b 92c9a8e146
commit 208ae7aa01
5 changed files with 24 additions and 1 deletions
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3
cpp/ql/src/Security/CWE/CWE-468/SuspiciousAddWithSizeof.ql
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@@ -18,7 +18,8 @@ import IncorrectPointerScalingCommon
private predicate isCharSzPtrExpr(Expr e) {
exists(PointerType pt | pt = e.getFullyConverted().getUnspecifiedType() |
pt.getBaseType() instanceof CharType or
pt.getBaseType() instanceof VoidType
pt.getBaseType() instanceof VoidType or
pt.getBaseType() instanceof ErroneousType // this could be char / void type in a successful compilation
)
}

4
cpp/ql/src/change-notes/2026-03-19-suspicious-add-sizeof.md Normal file
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@@ -0,0 +1,4 @@
---
category: minorAnalysis
---
* Fixed an issue with the "Suspicious add with sizeof" (`cpp/suspicious-add-sizeof`) query causing false positive results in `build-mode: none` databases.