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Re: Exim4 problems

From: Svante Signell
Subject: Re: Exim4 problems
Date: Sun, 15 May 2011 23:52:10 +0200

On Sun, 2011-05-15 at 23:34 +0200, Samuel Thibault wrote:
> Svante Signell, le Sun 15 May 2011 23:20:52 +0200, a écrit :
> > Segmentation fault
> Do you have a core file? Does your shell perhaps has limited core size
> limit? (ulimit -a to check)

Sorry I don't find any core file anywhere:
ulimit -a
socket buffer size       (bytes, -b) unlimited
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) unlimited
cpu time               (seconds, -t) unlimited
max user processes              (-u) unlimited
virtual memory          (kbytes, -v) unlimited

> > srs@kvm-hurd:~/DEBs/exim/exim4-4.76$ 
> > 
> > And with gdb the only output I get is (and no stack)
> > gdb build-tree/build-exim4-daemon-light/exim
> > 
> > Cannot access memory at address 0xffff548d
> > 
> > (I get this by just requesting: run from the gdb prompt, no file needed)
> > 
> > gdb bug?
> The address is really bogus, use show registers to know where it comes
> from, check eip, say 0x1234, use l * 0x1234 to know where that is, etc.,
> i.e. the usual "let's collect all trivial information before looking for
> some direction".

Sorry, I need more info here. I've completely (intentionally) forgotten
assembly (the DOS/i386 assembly reference manual was thrown into the
garbage many years ago, I did not expect to have to ever use it again).
I thought development was made with high-level languages nowadays (at
least C-level)

Update on optimization levels: -O1 does not work either :(
Other compiler switches are: -fno-strict-aliasing -fvisibility=hidden
There are a lot of warnings though: maybe some of them can cause
problems. Not all looks trivial.

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