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Fix code scanning alert no. 2620: Multiplication result converted to larger type #125

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merged 1 commit into from
Oct 3, 2024

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Fixes https://github.com/cooljeanius/apple-gdb-1824/security/code-scanning/2620

To fix the problem, we need to ensure that the multiplication is performed using a larger integer type to prevent overflow. This can be achieved by casting one of the operands to the larger type before performing the multiplication. In this case, we will cast i to CORE_ADDR before multiplying it by TARGET_ADDRESS_BYTES.

  • General Fix: Cast one of the operands to the larger type before performing the multiplication.
  • Detailed Fix: In the file src/gdb/fix-and-continue.c, on line 1245, cast i to CORE_ADDR before multiplying it by TARGET_ADDRESS_BYTES.
  • Specific Changes: Modify the line (*indirect_entries)[actual_entry_count].addr = indirect_ptr_section_start + i * TARGET_ADDRESS_BYTES; to (*indirect_entries)[actual_entry_count].addr = indirect_ptr_section_start + (CORE_ADDR)i * TARGET_ADDRESS_BYTES;.

Suggested fixes powered by Copilot Autofix. Review carefully before merging.

…larger type

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
@cooljeanius cooljeanius marked this pull request as ready for review October 3, 2024 01:58
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just a simple cast; ok

@cooljeanius cooljeanius merged commit 15102d5 into master Oct 3, 2024
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@cooljeanius cooljeanius deleted the autofix/alert-2620-b718df0b69 branch October 3, 2024 01:58
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