Access to failed builds [Was: gcc5 ICE xserver build on ARM]

[Jakub Jelinek]

On Tue, Feb 17, 2015 at 08:45:09AM +0000, Andrew Haley wrote:
> On 17/02/15 07:21, David Airlie wrote:
> 
> > Well I can't provide any info, I don't have an ARM box here, and it
> > happens in the buildroot which I don't think I can access to get the
> > files out from.
> 
> I've been bitten by this several times.  We need to find a better way
> to handle issues like this: when a build goes wrong a GCC developer
> needs to be able to see what went wrong, and that means direct access
> to the box so that they can reproduce the problem.
> 
> So what might we do to solve this?  Is there some way that we can
> "freeze" the contents of a buildroot to allow a dev to get in there
> and poke around?

In most cases when the bug is reproduceable and a single preprocessed
source is enough (e.g. not LTO build etc.), the gcc driver dumps all the
required info into /tmp/.

That is the -freport-bug
Preprocessed source stored into /tmp/ccXXXXXX.out file, please attach this to your bugreport.
message.
So, if mock + koji copied those over (best xz or bzip2 compressed) alongside with
build.log / root.log etc. in case the build failed, that would be very much
appreciated.

	Jakub