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Re: addr2line ends up off by 1 line numbers when -O0 is used
- From: Jeffrey Walton <noloader at gmail dot com>
- To: Britton Kerin <britton dot kerin at gmail dot com>
- Cc: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
- Date: Thu, 17 Mar 2016 18:24:29 -0400
- Subject: Re: addr2line ends up off by 1 line numbers when -O0 is used
- Authentication-results: sourceware.org; auth=none
- References: <CAC4O8c9ET7xbvfYA5J1dgineV3611ZbU00yLuDCeJyvF3uWdPQ at mail dot gmail dot com>
- Reply-to: noloader at gmail dot com
On Thu, Mar 17, 2016 at 6:15 PM, Britton Kerin <britton.kerin@gmail.com> wrote:
> I'm not sure whether to blame libc (backtrace() function) or gcc or
> addr2line, but
> if I dump the pointers from backtrace() to address_file then use
>
> addr2line -e my_exe -f -i <address_file >call_locations
>
> to recover the line numbers, the line numbers are off by 1 statement
> for some stack frames when -O0 has been used, but not if -O2 has been
> used at compile time.
I think addr2line is Binutils, http://www.gnu.org/software/binutils/.
Jeff