yade-dev team mailing list archive

[Bruno Chareyre <1666339@xxxxxxxxxxxxxxxxxx>]

Hi,
I agree that it sounds like some sort of gcc bug, or maybe a bug in circulators implementation.
Two versions of a code doing obviously the same thing but one of them crash, I've seen that before.
If I have a chance I'll send you a short "hello world" program with c++/cgal to see if you can reproduce the bug with your system. If so we can report it.

If the above "verbose" code fix the problem that is great, I'll push it
to trunk.

Bruno

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https://bugs.launchpad.net/bugs/1666339

Title:
  DFNflow crashes for compiled trunk but not non-optimized debug
  compiled trunk

Status in Yade:
  New

Bug description:
  Distro: Xenial 16.04LTS
  Yade Version: yade-2017-0207.git-11c276f
  Compilation: default compilation with debug flags and '#define DFNFLOW' uncommented in DFNFlow.cpp

  
  Summary:

  DFNFlowEngine crashes for compiled yade-2017-0207.git-11c276f sources.
  The segmentation fault also occurs for a debug compiled version and
  yields the attached core dump. Interestingly, the DFNFlowEngine does
  not crash for a non-optimized debug compilation of the same sources.

  
  Description of failure:

  According to the core dump, the failure can be traced back to
  DFNFlow.cpp:176, where it is checking if the cell is inifinite
  (although I have also had it fail at the permeability assignment
  directly below line 176 for a modified version of DFNflow.cpp).

   DFNFlow.cpp:

   176: if ( Tri.is_infinite(cell1) || Tri.is_infinite(cell2)) cerr<<"Infinite cell found in    trickPermeability, should be handled somehow, maybe"<<endl;
   177:	cell1->info().kNorm()[facet->second]=cell2->info().kNorm()[Tri.mirror_index(cell1, facet- >second)] = pow((aperture+residualAperture),3)/(12*viscosity);

  I am unsure why this line is causing a crash in the optimized-debug
  compiled code, but not the non-optimized-debug compiled code.

  My optimized-debug compiled executable is simply built with the flag
  -DDEBUG=ON. My non-optimized debug compiled code uses an edited
  CMakeLists.txt to avoid optimization:

  IF(CMAKE_COMPILER_IS_GNUCC)
    SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0")
    SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0")
  ENDIF(CMAKE_COMPILER_IS_GNUCC)

  The attached zip contains:
    mwe.py  // input script 
    liteSpecimen2mm.spheres  // packing file
    jointSurf.stl  // stl for smooth joint
    coreDump2.txt  // core dump after executing mwe.py with optimized debug compiled yade

  Any assistance with this bug is greatly appreciated.

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