On Thu, May 1, 2014 at 2:04 PM, Dafang Wang <dafang.w...@jhu.edu> wrote:
> Hi John, > > After a second check I think the bug that led to seg fault lies in the > LibmeshInit class, perhaps its constructor. As the updated error message > shows below, line 328 of libmesh.C is "command_line.reset (new GetPot > (argc, argv));", which creates a GetPot object. > > Also FYI, line 295 of my user code main_RealHeart.cpp is "LibMeshInit init > (argc, argv);". > > ==15661== Invalid read of size 8 > ==15661== at 0x6D675C9: GetPot::parse_command_line(int, char const* > const*, char const*) (getpot.h:558) > ==15661== by 0x6D67312: _ZN6GetPotC9EiPKPKcS1_ (getpot.h:536) > ==15661== by 0x6D6746D: GetPot::GetPot(int, char const* const*, char > const*) (getpot.h:65536) > ==15661== by 0x6D76B97: > _ZN7libMesh11LibMeshInitC9EiPKPKcP19ompi_communicator_t (libmesh.C:328) > ==15661== by 0x6D793BD: libMesh::LibMeshInit::LibMeshInit(int, char > const* const*, ompi_communicator_t*) (libmesh.C:0) > ==15661== by 0x4387B0: main (main_RealHeart.cpp:295) > ==15661== Address 0x0 is not stack'd, malloc'd or (recently) free'd > ==15661== > ==15661== Process terminating with default action of signal 11 (SIGSEGV) > ==15661== Access not within mapped region at address 0x0 > ==15661== at 0x6D675C9: GetPot::parse_command_line(int, char const* > const*, char const*) (getpot.h:558) > ==15661== by 0x6D67312: _ZN6GetPotC9EiPKPKcS1_ (getpot.h:536) > ==15661== by 0x6D6746D: GetPot::GetPot(int, char const* const*, char > const*) (getpot.h:65536) > ==15661== by 0x6D76B97: > _ZN7libMesh11LibMeshInitC9EiPKPKcP19ompi_communicator_t (libmesh.C:328) > ==15661== by 0x6D793BD: libMesh::LibMeshInit::LibMeshInit(int, char > const* const*, ompi_communicator_t*) (libmesh.C:0) > ==15661== by 0x4387B0: main (main_RealHeart.cpp:295) > Do you process argv at all before you pass it to LibMeshInit? What is your prototype for main()? In this stack trace, the segfault seems to be from line 558 of getpot.h in the parse_command_line() function. We have made a couple of small fixes in getpot.h since 0.9.2.2 came out, you might want to try the most recent version from libmesh master and see if it works for you... -- John ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available. Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
