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tool: allocfault, differential fuzz, sanitizer matrix - #4

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aadi-joshi merged 1 commit into
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fuzz/alloc-and-fuzz
Aug 2, 2026
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tool: allocfault, differential fuzz, sanitizer matrix#4
aadi-joshi merged 1 commit into
mainfrom
fuzz/alloc-and-fuzz

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Summary

  • Pillar 4 tools/allocfault: LD_PRELOAD interposer for C and Zig ABI; 271 ordinals, 0 crashes, identical ledger on 1+2*3; ASan shim campaign; Track G allocator-misuse criterion honestly not met
  • Differential fuzz: certified 60s run (48,512,558 execs, 0 divergences) in fuzz/log.txt; metamorphic 45/0; long campaign still running
  • Sanitizer matrix: C UBSan/ASan + 16 Zig mode/config cells; Lead B/C measured verdicts in docs/findings.md

Test plan

  • CI fuzz-smoke and allocfault workflows green
  • Original suite counts unchanged (4930/4924/4934/4928)
  • Review docs/evidence/sanitizers.md and allocfault fragments

Pillar 4 LD_PRELOAD interposer plus ASan shim; certified 60s fuzz log;
metamorphic campaign; sanitizer matrix; Lead B/C measured verdicts.
@aadi-joshi
aadi-joshi merged commit ec804ad into main Aug 2, 2026
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