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Subject: [Bug c++/49519] [4.7 Regression] Revision 175272 miscompiled 447.dealII in SPEC CPU 2006
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49519

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-06-24 16:37:20 UTC ---
step-14.cc is miscompiled:

#0  SparsityPattern::operator() (this=0xcef8ffff, i=0, j=0)
    at sparsity_pattern.cc:608
#1  0x08223fc1 in add (value=0.075579727185634243, j=<optimized out>, 
    i=<optimized out>, this=0xffffc76a) at include/lac/sparse_matrix.h:1709
#2  LaplaceSolver::Solver<3>::assemble_matrix (this=0x83845c8, 
    linear_system=..., begin_cell=..., end_cell=..., mutex=...)
    at step-14.cc:796
#3  0x0822750e in operator() (arg4=..., arg3=..., arg2=..., arg1=..., 
    this=0xffffc738) at include/base/thread_management.h:5382
#4  LaplaceSolver::Solver<3>::assemble_linear_system (this=0x83845c8, 
    linear_system=...) at step-14.cc:716
#5  0x0822a0c2 in LaplaceSolver::Solver<3>::solve_problem (this=0x83845c8)
    at step-14.cc:676
#6  0x082270cd in do_call<void (LaplaceSolver::WeightedResidual<3>::*)(),
LaplaceSolver::WeightedResidual<3>, boost::tuples::tuple<> > (obj=..., 
    fun_ptr=<optimized out>) at include/fe/fe_q.h:239