Actual source code: ex2.c


  2: static char help[] = "Tests the signal handler.\n";

  4: #include <petscsys.h>

  6: PetscErrorCode CreateError(int n)
  7: {
  8:   if (n) {
  9:     PetscCall(CreateError(n - 1));
 10:   } else {
 11:     volatile PetscReal *x = 0;
 12:     x[0]                  = 100.;
 13:   }
 14:   return PETSC_SUCCESS;
 15: }

 17: int main(int argc, char **argv)
 18: {
 19:   PetscFunctionBeginUser;
 20:   PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
 21:   PetscCall(PetscFPrintf(PETSC_COMM_WORLD, stdout, "Demonstrates how PETSc can trap error interrupts\n"));
 22:   PetscCall(PetscFPrintf(PETSC_COMM_WORLD, stdout, "The error below is contrived to test the code!\n"));
 23:   PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD, PETSC_STDOUT));
 24:   PetscCall(CreateError(5));
 25:   PetscCall(PetscFinalize());
 26:   return 0;
 27: }

 29: /*TEST

 31:    test:
 32:      args: -error_output_stdout
 33:      filter: grep -E "(Caught signal number 11 SEGV|Caught signal number 4 Illegal)" | wc -l
 34:      TODO:  Does not always produce exactly expected output on all systems for all runs

 36: TEST*/