I cannot compile VTK using gcc 4.1.0 (at least the one shipped in gcc-snapshot).
Step to reproduce (on debian testing system): 1. sudo apt-get install gcc-snapshot (as of today) 2. Get VTK source (CVS) 3. Compile line is: /usr/lib/gcc-snapshot/bin/g++ -o vtkRungeKutta45.o -DvtkCommon_EXPORTS -Wall -W -Wshadow -Wunused -Wno-system-headers -Wno-deprecated -Woverloaded-virtual -Wno-deprecated -O3 -fPIC -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/Utilities -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/VolumeRendering -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/Rendering -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Parallel -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Hybrid -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/VolumeRendering -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Rendering -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Rendering/Testing/Cxx -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/IO -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Imaging -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Graphics -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/GenericFiltering -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Filtering -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Common -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Utilities -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Common/Testing/Cxx -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/Utilities/DICOMParser -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Utilities/DICOMParser -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/Utilities/vtkfreetype/include -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Utilities/vtkfreetype/include -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/Utilities/vtkfreetype -I/home/mathieu/Dashboards/MyTests/ParaView/VTK/Utilities/ftgl/src -I/home/mathieu/Dashboards/MyTests/VTK-gcc-snapshot/Utilities/ftgl -I/usr/X11R6/include -I/usr/include/tcl8.4 -DVTK_IN_VTK -c /home/mathieu/Dashboards/MyTests/ParaView/VTK/Common/vtkRungeKutta45.cxx Error is: /home/mathieu/Dashboards/MyTests/ParaView/VTK/Common/vtkRungeKutta45.cxx: In member function 'int vtkRungeKutta45::ComputeAStep(double*, double*, double*, double, double&, double&)': /home/mathieu/Dashboards/MyTests/ParaView/VTK/Common/vtkRungeKutta45.cxx:205: error: Definition in block 76 follows the use for SSA_NAME: A_428 in statement: # A_441 = V_MAY_DEF <A_428>; # B_442 = V_MAY_DEF <B_429>; # C_443 = V_MAY_DEF <C_430>; # DC_444 = V_MAY_DEF <DC_431>; *error_48 = D.36281_47; /home/mathieu/Dashboards/MyTests/ParaView/VTK/Common/vtkRungeKutta45.cxx:205: internal compiler error: verify_ssa failed. Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. -- Summary: internal compiler error: verify_ssa failed Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: mmalater at nycap dot rr dot com CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22037
