Add test cases for INTMIN/-1 #733
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Fixes vbpf#677 Signed-off-by: Dave Thaler <[email protected]>
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Actionable comments posted: 3
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📒 Files selected for processing (2)
- external/bpf_conformance (1 hunks)
- src/test/test_conformance.cpp (3 hunks)
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🔇 Additional comments (3)
external/bpf_conformance (1)
1-1: LGTM: Subproject commit update approved.The update of the bpf_conformance framework to the latest version (commit e80df9982518c0ea41c939b561b06daa1bfce313) aligns with the PR objectives. This change should incorporate the latest improvements and possibly new test cases for the verifier.
To ensure the update includes the expected changes, please verify the following:
- The changes introduced in the new commit of bpf_conformance framework.
- Any new test cases or modifications related to handling INT64_MIN and its expressions.
You can use the following commands to inspect the changes:
#!/bin/bash # Description: Verify changes in the bpf_conformance submodule # Navigate to the submodule directory cd external/bpf_conformance # Show the commit message and changes introduced in the new commit git log -1 --pretty=full e80df9982518c0ea41c939b561b06daa1bfce313 git show e80df9982518c0ea41c939b561b06daa1bfce313 --name-status # Search for any new or modified test cases related to INT64_MIN git show e80df9982518c0ea41c939b561b06daa1bfce313 | grep -i "int64_min"This will help ensure that the update includes the necessary changes to address the PR objectives and the linked issue #677.
src/test/test_conformance.cpp (2)
200-201: Excellent addition of multiplication test cases for INT64_MINThese new test cases for multiplication operations involving INT64_MIN and -1 are crucial additions that directly address the PR objectives. They cover both 32-bit and 64-bit scenarios, as well as immediate and register-based operations. This comprehensive approach will help identify potential issues with integer overflow or unexpected behavior in these edge cases.
Also applies to: 205-206
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200-250: Comprehensive enhancement of the conformance testing frameworkThe additions to the
test_conformance.cppfile significantly enhance the robustness of the BPF conformance testing framework. The new test cases effectively address the PR objectives and the concerns raised in the linked issue #677. By including comprehensive tests for multiplication, negation, division, and modulo operations involving INT64_MIN and related expressions, this update ensures that the verifier's behavior is thoroughly evaluated for these edge cases.The consistent approach of testing both 32-bit and 64-bit scenarios, as well as immediate and register-based operations, provides a solid foundation for identifying potential issues related to integer overflow, undefined behavior, and unexpected results in these critical edge cases.
These changes will greatly contribute to improving the overall reliability and accuracy of the verifier in handling extreme integer values, which is crucial for maintaining the integrity and security of BPF programs.
Updates bpf_conformance to latest and adds the new test cases to the test pass
Fixes #677
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