c++/4512: New ICE in loop_iterations at unroll.c:3510, regressionvs. 3.0.1

[Wolfgang Bangerth]

> Synopsis: New ICE in loop_iterations at unroll.c:3510, regression vs. 3.0.1
> State-Changed-From-To: open->closed

Thanks for looking into it, but then there must be a different bug lurking
somewhere: while your patch fixes the testcase it still does not fix
compilation of my library. I unfortunately don't have the time today to
reduce it again from the original code, so I can only send you the
preprocessed source which is somewhat largish, but I hope you can still
figure out what is going on.

Best regards
  Wolfgang


deal.II/deal.II> c++ -v
Reading specs from
/home/people/wolf/Config/sparc-sun-solaris2.7/gcc-ss/lib/gcc-lib/sparc-sun-solaris2.7/3.0.2/specs
Configured with: ../gcc/configure
--prefix=/home/people/wolf/Config/sparc-sun-solaris2.7/gcc-ss
--with-gnu-ld --with-gnu-as --with-ld=/usr/local/bin/ld
--with-as=/usr/local/bin/as
Thread model: posix
gcc version 3.0.2 20011011 (prerelease)


deal.II/deal.II> c++ -O2 -funroll-all-loops a.i
source/grid/grid_out.cc: In member function `unsigned int 
   GridOut::n_boundary_faces(const Triangulation<dim>&) const [with int
dim = 
   2]':
source/grid/grid_out.cc:71:   instantiated from `void
GridOut::write_ucd(const Triangulation<dim>&, std::ostream&) [with int dim
= 2]'
source/grid/grid_out.cc:829:   instantiated from here
source/grid/grid_out.cc:164: Internal compiler error in loop_iterations,
at 
   unroll.c:3515
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.


-------------------------------------------------------------------------
Wolfgang Bangerth          email: wolfgang.bangerth@iwr.uni-heidelberg.de
                             www: http://gaia.iwr.uni-heidelberg.de/~wolf

-------------- next part --------------
A non-text attachment was scrubbed...
Name: a.i.gz
Type: application/x-gzip
Size: 115402 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-bugs/attachments/20011011/f0c4c919/attachment.bin>