This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [PATCH][4/4][v2] RPO-style value-numbering for FRE/PRE
On Mon, 10 Sep 2018, Martin Liška wrote:
> I can reproduce that locally in a KVM machine running FreeBSD test
> 10.4-RELEASE. I used gcc version 6.4.0 (FreeBSD Ports Collection) to
> build stage1 compiler and I can see Segfaults happening.
Great, thanks for helping look into this, Martin!
> Issue is that neither valgrind nor gdb work on the system.
> Valgrind has 2 PRs reported:
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224878
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228973
>
> For the gdb I can't see any lines associated:
Which gdb are you using? (`which gdb` and/or `gdb --version`?)
If, as I assume, it is the old one in the system (GDB 6.1.1) it
may be worth a try installing the one from the ports/packages.
Something like `pkg add gdb`, which should bring in GDB 8.1.1.
> Would be very handy to have at least one of these tools working.
> Gerald can you please help us with that?
I believe the GDB route is the more promising one (also having looked
at the two PRs you found re valgrind on FreeBSD/i386). Quesiton is,
is it more of a GDB issue, or perhaps debugging information missing?
Let me know what you find, I may be able to ask others, closer to the
FreeBSD toolchain for help.
Gerald