Re: LMDB test assertion failures on Linux/MIPS

[Howard Chu <hyc@symas.com>]

Martin Lucina wrote:
> richton@nbcs.rutgers.edu said:
> > > Rebuilt with the Sun compilers to get proper debug info, the faulting
> > > instruction is the same as the one in GCC:
> > >
> > > signal SEGV (no mapping at the fault address) in mdb_env_pick_meta at line 3349 in file "mdb.c"
> > > 3349           return (env->me_metas[0]->mm_txnid < env->me_metas[1]->mm_txnid);
> > >
> > > Martin
> >
> > I don't have MIPS specsheets memorized/in front of me, but what's
> > the pagesize?
> >
> > http://www.openldap.org/lists/openldap-devel/201310/msg00005.html
> > (and ITS#7713)
>
> 4k on the MIPS boards I'm using. The SPARC I tried on is 8k, but LMDB
> 0.9.11 from git uses sysconf(_SC_PAGE_SIZE) to get the page size at run
> time so that shouldn't be a problem.
>
> The SPARC and MIPS problems may or may not be related - I just tried SPARC
> since Howard mentioned it worked. Do you know a known-good version on
> SPARC? If so I can work from that and see if I can find the commits that
> introduced the problem.

I just did a fresh build of 32 bit SPARC Solaris 10 with gcc 4.4.0 and mtest 
works fine. I get a number of warnings if I use -Wcast-align but in this case 
they're irrelevant.

--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/