C++: add isVla predicated to ArrayType
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Pull Request Overview
This PR introduces a new predicate, isVla(), in the ArrayType class to enable detection of variable-length arrays. Key changes include:
- Creating a new table, type_is_vla.
- Adding the isVla() predicate in ArrayType.
- Updating change notes and upgrade/downgrade scripts.
Files not reviewed (4)
- cpp/downgrades/fe54db1af25b6d8a1e25f6cbeae68baf615efc87/upgrade.properties: Language not supported
- cpp/ql/lib/semmle/code/cpp/Type.qll: Language not supported
- cpp/ql/lib/semmlecode.cpp.dbscheme: Language not supported
- cpp/ql/lib/upgrades/e594389175c098d7225683d0fd8cefcc47d84bc1/upgrade.properties: Language not supported
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jketema
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Apr 15, 2025
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One comment, which will unfortunately be a bit of annoying work, otherwise LGTM.
cpp/ql/lib/semmlecode.cpp.dbscheme
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| int decl: @stmt_vla_decl ref | ||
| ); | ||
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| type_is_vla(unique int type_id: @type ref) |
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This is going to be a bit painful (because you need to re-do the upgrade scripts, and possibly also the stats file), but you should be able to do the following:
Suggested change
| type_is_vla(unique int type_id: @type ref) | |
| type_is_vla(unique int type_id: @derivedtype ref) |
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Good point! 👍
I'll change that.
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This PR does the following:
type_is_vla.isVla, in theArrayTypeclass.