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*/