Corrupted stack/heap under debugger when simulating?

Question

I\'m using Xcode 6.3.1. I\'m trying to track a weird issue in an app and now I\'m seeing that local variables seem to be incorrectly initialised. When I hit a breakpoint at the

Answer 1

A breakpoint is actually before the line it appears on; that line has not yet executed. You are thus looking too soon at this variable. It has no meaningful value until after you step past the line where it is initialized. You are still before that line so its value is random garbage.