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Fixes binaryninja-api#6825 #6916

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Merged
merged 1 commit into from
Jul 16, 2025
Merged

Fixes binaryninja-api#6825 #6916

merged 1 commit into from
Jul 16, 2025

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plafosse
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@plafosse plafosse commented Jun 3, 2025

we weren't handling zero offsets from structures at all it looks like.
#6825

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CLAassistant commented Jun 3, 2025

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@plafosse plafosse requested review from rssor and Copilot June 24, 2025 13:10
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Pull Request Overview

This PR addresses issue binaryninja-api#6825 by refining the handling of zero offsets in structure member evaluation. Key changes include:

  • Replacing the dereference flag with a member resolution flag (memberResolved)
  • Updating token rendering logic to always use instr.size for type casts
  • Revising pointer arithmetic handling to only append arithmetic tokens when the offset is non-zero
Comments suppressed due to low confidence (3)

lang/c/pseudoc.cpp:2467

  • [nitpick] Consider renaming 'memberResolved' to 'isMemberResolved' for improved clarity and consistency with boolean naming conventions.
			bool memberResolved = false;

lang/c/pseudoc.cpp:2520

  • Ensure that always using 'instr.size' instead of conditionally selecting a size value is the intended design for the type cast, as this change may affect the formatting of the resulting expression.
				AppendSizeToken(instr.size, true, tokens);

lang/c/pseudoc.cpp:2536

  • Confirm that the decision to only append pointer arithmetic tokens when offset is non-zero fully addresses the zero offset issue without unintended side effects in pointer arithmetic scenarios.
			if (offset != 0)

@bdash bdash force-pushed the test_fix_6825 branch 3 times, most recently from 18f70cd to 7a4e006 Compare July 16, 2025 18:45
@bdash bdash merged commit 400c215 into dev Jul 16, 2025
1 check passed
@bdash bdash deleted the test_fix_6825 branch July 16, 2025 22:19
@emesare emesare added this to the Helion milestone Jul 23, 2025
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5 participants