Hi,
On Thu, Jan 10, 2019 at 02:14:14AM +0500, Andrey Rahmatullin wrote:
> On Wed, Jan 09, 2019 at 09:42:43PM +0100, Andreas Tille wrote:
> > to find the exact code line[2] where the SIGSEGV is thrown. It turns out
> > that the elements of a structure are not accessible:
> >
> > (gdb) print entry->offset
> > Cannot access memory at address 0x7
> It's because entry is 0x7.
When I was running the code with some more debugging info activated[1]
I had pretty valid looking adresses 0x555666 (or something in that line
just remembering by heart - can activate the patch if needed). I have
no idea why the address is this without that extra debug code.
> > The values of the structure are set in line 350[3] and are OK there.
> The problem is not about the structure fields but about the structure
> pointer itself though.
> ...
> You need to find out why one of the tree nodes has an invalid address.
Can you propose any means to find this out? I have no idea about
specific compiler differences. BTW, I also tried to set -O0 but this
did not avoided the SIGSEGV.
Thanks for your hint anyway
Andreas.
[1]
https://salsa.debian.org/med-team/ffindex/blob/master/debian/patches/debug_segfault
--
http://fam-tille.de
