Re: gdb: Symbolized Crash Report: One line spans multiple functions?
Re: gdb: Symbolized Crash Report: One line spans multiple functions?
- Subject: Re: gdb: Symbolized Crash Report: One line spans multiple functions?
- From: Ken Thomases <email@hidden>
- Date: Mon, 28 Dec 2009 18:25:26 -0600
On Dec 28, 2009, at 5:55 PM, Jerry Krinock wrote:
> Sorry, I forgot to shorten one of those class names for brevity. Here's what I meant:
>
> Line 97 of "/Users/jk/Documents/Programming/Projects/Project1/ExtoreG+Loginner.m" starts at address 0xeb12d <-[ExtoreG(Loginner) logInWithInfo:]+884> and ends at 0xeb135 <-[ExtoreG(Loginner) errorLoggingIn]>.
This is just me guessing, but...
I think this is just an issue with describing ranges and their boundaries. When you describe a range by its endpoints, each endpoint may be included in the range or not. In English, it's pretty common to say "from a to b", "from a to b, inclusive", or "from a to b, exclusive" and the like. In math, ranges can have open or closed boundaries -- for example, [0, 1) means the range from 0 to 1, including 0 but excluding 1. The left end of the range is "closed", the right end is "open".
Anyway, I suspect gdb means the line generates instructions starting at and including address 0xeb12d and running to, but not including, 0xeb135. Since 0xeb135 is the first instruction of -errorLoggingIn (there's no +xxx after the symbol name), this just means that line 97 runs until that method but not "into" it.
It's pretty common that functions have no-op instructions between them, which would normally avoid this adjacency, but maybe you just got unlucky.
Regards,
Ken
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