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Re: Stepping over longjmp presumably broken for glibc
- From: Eli Zaretskii <eliz at gnu dot org>
- To: gdb at sourceware dot org
- Date: Fri, 23 Dec 2005 10:25:04 +0200
- Subject: Re: Stepping over longjmp presumably broken for glibc
- References: <20051222211734.GA13178@nevyn.them.org>
- Reply-to: Eli Zaretskii <eliz at gnu dot org>
> Date: Thu, 22 Dec 2005 16:17:34 -0500
> From: Daniel Jacobowitz <drow@false.org>
> Cc: libc-alpha@sourceware.org
>
> Current versions of glibc for many platforms xor the saved PC with a
> randomized canary, so setting a breakpoint at that "address" isn't
> going to work especially well.
How does glibc restore the correct address when you call longjmp? Do
they save the canary in some place, or something?