Re: anybody else having segmentation faults while building master today?

On 2012-09-14 14:06, Michael Meeks wrote:
> Hi Noel,
>
> On Fri, 2012-09-14 at 13:31 +0200, Noel Grandin wrote:
> > /bin/bash: line 1: 19440 Segmentation fault      (core dumped)
> > LD_LIBRARY_PATH=/home/noel/libo/solver/unxlngx6/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
> > ../unxlngx6/bin/makedepend @/tmp/mkiODjuI > ../unxlngx6/misc/o__cpp.dpcc
> > dmake:  Error code 139, while making '../unxlngx6/obj/_cpp.obj'
>         Nope - not having those - although with makedepend it could be related
> to your all those meta-characters in your path ;-> (or not).
>
>         I guess ensuring that /tmp/mkiODjuI is not removed, and/or running
> makedepend under the debugger - by tweaking the makefiles is prolly the
> only way out.



LOL. So after much investigation and running the thing under a debugger, 
it turns out it was all my fault.

I had set the stack size way down using "ulimit -s" because I was 
tracking down a recursive bug, and it was generating huge stacktraces 
before blowing up :-)

And it also turns out the makedepend allocates a truly large chunk of 
stuff on the stack, triggering the stack limit.

Who knew unix could be so unfriendly when hitting the stack guard page?

Sigh.
We (Linux) still have a very long way to go in terms of making 
developers lives easier.
Honestly, I had a better debugging experience 15 years ago when working 
under OpenVMS.
15 years!!!!!



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