Tencent TDS Service

May 28, 2015 · Mobile Development

Turning Random Obj‑C Wild‑Pointer Crashes into Deterministic Bugs

This article explains why Obj‑C wild‑pointer crashes appear random, analyzes various memory‑state scenarios after object deallocation, and shows how to force deterministic crashes by filling freed memory with inaccessible patterns using Xcode's Enable Scribble and a custom free‑hook implementation.