I did more testing, and looks like things are fine when using GDB instead of LLDB(= the default in latest Xcode). Maybe this should be added to a wiki page somewhere?

On 2012-06-08, at 3:48 PM, mikel evins wrote:

On Jun 8, 2012, at 11:21 AM, Kirill Zorin wrote:

Is it possible that something that Gambit does to the process' state interferes with Apple's iOS debugger, and/or is there some assumption made by ___setup() about initial process state that's invalidated by something the Xcode debugger does? Or am I barking up the wrong tree here altogether?

Hrm. It's not in any way conclusive, and I may be reinfocing a mistaken hypothesis, but I do recall seeing several debugger-related warnings in the console log when I was reading through them.