Debugging a closure capture leak in a third-party library
WHAT IT TESTS: methodical leak diagnosis. OUTLINE: use the Memory Graph Debugger to inspect retain paths, the Leaks and Allocations instruments, and malloc stack logging; trace the cycle before patching.
WHAT IT TESTS: disciplined investigation of an object graph rather than reflexive fixes. ANSWER OUTLINE: open the Memory Graph Debugger to see who retains the leaked object and follow the cycle of strong references; pair it with the Leaks and Allocations instruments and enable malloc stack logging to capture allocation backtraces. Identify the exact retaining edge, often a strong capture inside a stored block, then break it deliberately. RED FLAG: sprinkling [weak self] everywhere without understanding which reference closes the cycle.
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- #ios
- #memory
- #instruments
- #debugging
- #retain-cycle
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