Still can't build libreoffice

[Kostik Belousov]

On Sun, Oct 02, 2011 at 09:54:36PM +0200, Baptiste Daroussin wrote:
> On Sun, Oct 02, 2011 at 12:55:27AM -0700, Doug Barton wrote:
> > I'm on 9-current r225756 amd64. Since the latest version of libreoffice
> > was committed I always get stuck with cppunittest pegging the cpu at
> > 100% and never completing. I've tried removing the port and letting
> > libreoffice reinstall it as a dependency, no luck.
> > 
> > Here's where I'm getting stuck:
> > 
> > ----------------------------------------------------------
> > - start unit test #1 on library ../../unxfbsd.pro/lib/libcppu_ifcontainer.so
> > ----------------------------------------------------------
> > : &&
> > LD_LIBRARY_PATH=/mnt/local2/tmp/home/ports/editors/libreoffice/work/libreoffice-bootstrap-3.4.3.2/clone/ure/cppuhelper/unxfbsd.pro/lib:/mnt/local2/tmp/home/ports/editors/libreoffice/work/libreoffice-bootstrap-3.4.3.2/solver/340/unxfbsd.pro/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
> > 
> > /mnt/local2/tmp/home/ports/editors/libreoffice/work/libreoffice-bootstrap-3.4.3.2/solver/340/unxfbsd.pro/bin/cppunit/cppunittester
> > ../../unxfbsd.pro/lib/libcppu_ifcontainer.so
> > OK (5)
> > 
> > And ktrace'ing the process gets endless repetition of this:
> > 
> >  46718 cppunittester CALL  sigprocmask(SIG_BLOCK,0x80083f720,0x7fffffff8030)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_SETMASK,0x80083f734,0)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_BLOCK,0x80083f720,0x7fffffff8030)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_SETMASK,0x80083f734,0)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_BLOCK,0x80083f720,0x7fffffff81f0)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_SETMASK,0x80083f734,0)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_BLOCK,0x80083f720,0x7fffffff81f0)
> >  46718 cppunittester RET   sigprocmask 0
> >  46718 cppunittester CALL  sigprocmask(SIG_SETMASK,0x80083f734,0)
> >  46718 cppunittester RET   sigprocmask 0
> > 
> > Which leads me to believe it's stuck in a loop somewhere.
> > 
> > 
> > Any ideas?
> > 
> > Doug
> > 
> 
> Now idea at all about that, currently you are the only reporting that to me,
> i'll check with some upstream devs, hope they will have more ideas that I do

The sigprocmask() syscalls could be issued from the rtld.

I think a drill-down is needed there. Ideally, the minimal C source
program that exhibit the problem is to be determined.

Meantime, if my guess is close to the right, you can compile
rtld/libc/libthr with the debugging information and attach gdb to the
looping process. Then, get several backtraces of the looping thread,
interleaved with "continue", to roughly determine the loop block.
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