dolfin team mailing list archive

[Johannes Ring <johannr@xxxxxxxxx>]

On Wed, Dec 2, 2009 at 11:02 AM, Johannes Ring <johannr@xxxxxxxxx> wrote:
> On Wed, Dec 2, 2009 at 10:58 AM, Anders Logg <logg@xxxxxxxxx> wrote:
>> On Wed, Dec 02, 2009 at 10:24:18AM +0100, Johannes Ring wrote:
>>> Hi,
>>>
>>> Someone pushed the Force Build button on the winxp-mingw32 slave. I
>>> don't see a good reason for this since the demo.log shows it quite
>>> clearly why it fails:
>>>
>>> http://fenics.org:8080/builders/dolfin-winxp-mingw32/builds/11/steps/dolfin%20check/logs/demo.log
>>>
>>> The problem is the same as the hardy-i386 slave reports, that is, the
>>> following two demos exits with a segmentation fault:
>>>
>>> demo\pde\stokes\stabilized\cpp
>>> demo\pde\stokes\taylor-hood\cpp
>>
>> I can't figure out why these fail. Valgrind does not complain on my
>> machine. Does anyone have a 32 bit system to test on?
>
> Yes, I have my laptop. I will try to do some debugging.

I got a segfault too. Here is the output from running
demo\pde\stokes\stabilized\cpp in gdb:

johannr@simula-x61:cpp$ gdb ./demo
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
(gdb) run
Starting program:
/home/johannr/src/bzr/dolfin/demo/pde/stokes/stabilized/cpp/demo
[Thread debugging using libthread_db enabled]
[New Thread 0xb536a6c0 (LWP 21306)]
Solving linear variational problem
  Matrix of size 8604 x 8604 has 174636 nonzero entries.
  Applying boundary conditions to linear system.
  Applying boundary conditions to linear system.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb536a6c0 (LWP 21306)]
0xb7c265c8 in dolfin::Data::clear () from
/home/johannr/src/bzr/dolfin/local/lib/libdolfin.so.0
Current language:  auto; currently asm
(gdb) where
#0  0xb7c265c8 in dolfin::Data::clear () from
/home/johannr/src/bzr/dolfin/local/lib/libdolfin.so.0
#1  0xb7ca13aa in dolfin::GenericFunction::restrict_as_ufc_function
(this=0xbfccd268, w=0x82ada80,
    element=@0x80f64a8, dolfin_cell=@0xbfccc8f8, ufc_cell=@0xbfccc88c,
local_facet=2)
    at dolfin/function/GenericFunction.cpp:62
#2  0xb7c8b780 in dolfin::Expression::restrict (this=0xbfccd268,
w=0x82ada80, element=@0x80f64a8,
    dolfin_cell=@0xbfccc8f8, ufc_cell=@0xbfccc88c, local_facet=2) at
dolfin/function/Expression.cpp:77
#3  0xb7c609b5 in dolfin::DirichletBC::compute_bc_topological
(this=0xbfccd55c, boundary_values=@0xbfccc9a8,
    data=@0xbfccc9c0) at dolfin/fem/DirichletBC.cpp:527
#4  0xb7c60e4c in dolfin::DirichletBC::compute_bc (this=0xbfccd55c,
boundary_values=@0xbfccc9a8, data=@0xbfccc9c0)
    at dolfin/fem/DirichletBC.cpp:488
#5  0xb7c64520 in dolfin::DirichletBC::apply (this=0xbfccd55c,
A=0xbfcccb58, b=0xbfcccb10, x=0x0)
    at dolfin/fem/DirichletBC.cpp:320
#6  0xb7c64a03 in dolfin::DirichletBC::apply (this=0xbfccd55c,
A=@0xbfcccb58, b=@0xbfcccb10)
    at dolfin/fem/DirichletBC.cpp:173
#7  0xb7c47d41 in dolfin::VariationalProblem::solve_linear
(this=0xbfccd2e0, u=@0xbfcccf9c)
    at dolfin/fem/VariationalProblem.cpp:204
#8  0xb7c48bbc in dolfin::VariationalProblem::solve (this=0x3,
u=@0x80f6648) at dolfin/fem/VariationalProblem.cpp:93
#9  0x08074a06 in main () at main.cpp:89
(gdb)