Bug#778163: vim: ftbfs with GCC-5

James McCoy jamessan at debian.org
Fri Feb 27 18:45:50 UTC 2015


On Feb 27, 2015 12:14 PM, "Matthias Klose" <doko at debian.org> wrote:
>
> On 02/27/2015 05:27 PM, James McCoy wrote:
> > On Fri, Feb 13, 2015 at 10:14:03PM -0500, James McCoy wrote:
> >> On Thu, Feb 12, 2015 at 10:37:46AM +0000, Matthias Klose wrote:
> >>> The package fails to build in a test rebuild on at least amd64 with
> >>> gcc-5/g++-5, but succeeds to build with gcc-4.9/g++-4.9.
> >>
> >> I eventually narrowed it down to “-O1 -fno-tree-dominator-opts
> >> -fno-tree-fre” as the minimal set that will cause the build to succeed.
> >> Dropping either of those -fno-tree-… will cause the build to fail.
> >>
> >> This seems like a GCC bug to me.  Let me know if you need more
> >> information and, more importantly, how to get the right information.
> >> Note that Vim's source compiles fine in all situations but the tests
> >> fail when those optimizations aren't disabled.
> >
> > I'm still seeing this with the latest gcc-5 upload (5-20150226-1).
>
> didn't touch that yet. Can you narrow down the file where this is needed,
by
> combining object files from two builds?

I narrowed it down to src/regexp.c.

Cheers,
James
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