asm-testing

Structured workflow for testing, debugging, and hunting bugs in hand-written and injected assembly — from standard library functions to offensive trampolines, callgates, and PIC shellcode.

If harness flakiness, timing, or weak assertions dominate, pair this skill with testing-reliability. If crashes or silent corruption remain unexplained after focused checks, pair with systematic-debugging before patching symptoms.

When implementing persistent assembly-facing behavior or fixing a bug, pair with test-driven-development to capture the failing harness or reproducer first.

Phase 1 — ABI Compliance Checklist

Run before writing a single test. ABI violations cause silent corruption that surfaces far from the root cause.

x86-64 System V (Linux/macOS)