Add Memory2 and Memory3 package

[jeongsoolee09]

Description

Add Memory2 and Memory3 packages.

Change request type

• Release or process automation (GitHub workflows, internal scripts)
• Internal documentation
• External documentation
• Query files (.ql, .qll, .qls or unit tests)
• External scripts (analysis report or other code shipped as part of a release)

Rules with added or modified queries

• No rules added
• Queries have been added for the following rules:
  • RULE-8-7-2
  • RULE-8-9-1
• Queries have been modified for the following rules:
  • rule number here

Release change checklist

A change note (development_handbook.md#change-notes) is required for any pull request which modifies:

• The structure or layout of the release artifacts.
• The evaluation performance (memory, execution time) of an existing query.
• The results of an existing query in any circumstance.

If you are only adding new rule queries, a change note is not required.

Author: Is a change note required?

• Yes
• No

🚨🚨🚨
Reviewer: Confirm that format of shared queries (not the .qll file, the
.ql file that imports it) is valid by running them within VS Code.

• Confirmed

Reviewer: Confirm that either a change note is not required or the change note is required and has been added.

• Confirmed

Query development review checklist

For PRs that add new queries or modify existing queries, the following checklist should be completed by both the author and reviewer:

Author

• Have all the relevant rule package description files been checked in?
• Have you verified that the metadata properties of each new query is set appropriately?
• Do all the unit tests contain both "COMPLIANT" and "NON_COMPLIANT" cases?
• Are the alert messages properly formatted and consistent with the style guide?
• Have you run the queries on OpenPilot and verified that the performance and results are acceptable?
  As a rule of thumb, predicates specific to the query should take no more than 1 minute, and for simple queries be under 10 seconds. If this is not the case, this should be highlighted and agreed in the code review process.
• Does the query have an appropriate level of in-query comments/documentation?
• Have you considered/identified possible edge cases?
• Does the query not reinvent features in the standard library?
• Can the query be simplified further (not golfed!)

Reviewer

• Have all the relevant rule package description files been checked in?
• Have you verified that the metadata properties of each new query is set appropriately?
• Do all the unit tests contain both "COMPLIANT" and "NON_COMPLIANT" cases?
• Are the alert messages properly formatted and consistent with the style guide?
• Have you run the queries on OpenPilot and verified that the performance and results are acceptable?
  As a rule of thumb, predicates specific to the query should take no more than 1 minute, and for simple queries be under 10 seconds. If this is not the case, this should be highlighted and agreed in the code review process.
• Does the query have an appropriate level of in-query comments/documentation?
• Have you considered/identified possible edge cases?
• Does the query not reinvent features in the standard library?
• Can the query be simplified further (not golfed!)

[Copilot]

Pull request overview

This PR adds two new rule packages (Memory2 and Memory3) to implement MISRA C++ 2023 pointer safety rules RULE-8-7-2 and RULE-8-9-1, which enforce that pointer arithmetic operations (subtraction and relational comparisons) should only be performed on pointers addressing elements of the same array.

Changes:

• Added Memory2 package for RULE-8-7-2 (pointer subtraction validation)
• Added Memory3 package for RULE-8-9-1 (pointer relational comparison validation)
• Updated rules.csv to assign these new packages to existing rule entries

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
rules.csv	Updated package assignments for RULE-8-7-1, RULE-8-7-2, and RULE-8-9-1 from Memory/uncommitted to Memory1/Memory2/Memory3
rule_packages/cpp/Memory2.json	Added package metadata for RULE-8-7-2 pointer subtraction validation query
rule_packages/cpp/Memory3.json	Added package metadata for RULE-8-9-1 pointer comparison validation query
cpp/misra/src/rules/RULE-8-7-2/PointerDifferenceTakenBetweenDifferentArrays.ql	Implemented query for detecting pointer subtraction between different arrays
cpp/misra/src/rules/RULE-8-9-1/PointerComparedBetweenDifferentArrays.ql	Implemented query for detecting pointer comparisons between different arrays
cpp/common/src/codingstandards/cpp/exclusions/cpp/Memory2.qll	Generated metadata for Memory2 package query registration
cpp/common/src/codingstandards/cpp/exclusions/cpp/Memory3.qll	Generated metadata for Memory3 package query registration
cpp/common/src/codingstandards/cpp/exclusions/cpp/RuleMetadata.qll	Added imports and registrations for Memory2 and Memory3 packages
cpp/misra/test/rules/RULE-8-7-2/*	Added test infrastructure files for RULE-8-7-2
cpp/misra/test/rules/RULE-8-9-1/*	Added test infrastructure files for RULE-8-9-1

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[MichaelRFairhurst]

Nice! Just one metadata comment only

[MichaelRFairhurst]

Can you add the "correctness" tag to these?

[jeongsoolee09]

Makes sense! I've also added it to Memory3, in 017f019.

[MichaelRFairhurst]

LGTM!