Allocator reference

[arvidn]

Use 32 bits for version in allocator-debug feature. This allows 2^32 uses of restore_checkpoint() on the Allocator when debugging.

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Note

Low Risk
Debug-only behavior changes plus fuzz configuration; no changes to non-debug allocator semantics, but could affect assertions/panics when allocator-debug is enabled.

Overview
Improves allocator-debug safety checks by separating AllocatorReference into a 24-bit-ish fingerprint plus a full 32-bit version, removing the previous 8-bit version packing limit and allowing far more restore_checkpoint() cycles before debug invalidation tracking breaks.

Updates NodePtr creation and validate_node() to use the new explicit version field, and enables the allocator-debug feature in the fuzz crate to exercise these debug checks during fuzzing.

^{Written by Cursor Bugbot for commit a741578. This will update automatically on new commits. Configure here.}

[coveralls-official]

Pull Request Test Coverage Report for Build 21778821045

Details

• 3 of 4 (75.0%) changed or added relevant lines in 1 file are covered.
• 12 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 90.474%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/allocator.rs	3	4	75.0%

Files with Coverage Reduction	New Missed Lines	%
src/allocator.rs	12	96.22%

Totals
Change from base Build 21748841115:	0.01%
Covered Lines:	6582
Relevant Lines:	7275

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💛 - Coveralls