Debugging exception thrown in Objective-C and Xcode

Question

I am a long time Microsoft developer and I am new to iPhone development using Xcode. So, I am reading a book and going through examples trying to teach myself how to write

Answer 1

Always use the -Werror GCC setting (GCC_TREAT_WARNINGS_AS_ERRORS = YES). You should never have warnings in your code and this is an example where the warning is a critical error.

Also, if you get an objc_exception_throw, switch to the console (Command-shift-R) and look for the first "low" number address.

2009-04-01 13:25:43.385 CrashExample[41720:20b] Stack: (
    2528013804,
    2478503148,
    2528036920,
    2528053460,
    2358032430,
    11076,
    11880,
    816174880,
    345098340,
    145973440,
    816174880,
)

In this case it would be "11076". So type in the console:

info line *11076

That will tell you the line in your code where the exception was thrown.