1 static char help[] = "Tests checking pointers.\n\n"; 2 3 #include <petscsys.h> 4 #include <petsc/private/petscimpl.h> 5 #include <petscvalgrind.h> 6 7 int main(int argc, char *args[]) 8 { 9 PetscErrorCode ierr; 10 PetscInt *ptr; 11 12 ierr = PetscInitialize(&argc, &args, (char*) 0, help);if (ierr) return ierr; 13 if (ierr) return ierr; 14 if (!PETSC_RUNNING_ON_VALGRIND) { /* PetscCheckPointer always returns TRUE when running on Valgrind */ 15 ierr = PetscMalloc(1024 * 1024 * 8,&ptr);CHKERRQ(ierr); /* Almost certainly larger than MMAP_THRESHOLD (128 KiB by default) */ 16 if (!PetscCheckPointer(ptr,PETSC_INT)) {ierr = PetscPrintf(PETSC_COMM_SELF,"Mistook valid pointer %p for invalid pointer\n",(void*)ptr);CHKERRQ(ierr);} 17 ierr = PetscFree(ptr);CHKERRQ(ierr); 18 if (PetscCheckPointer(ptr,PETSC_INT)) {ierr = PetscPrintf(PETSC_COMM_SELF,"Mistook NULL pointer for valid pointer\n");CHKERRQ(ierr);} 19 ptr = (PetscInt*) ~(PETSC_UINTPTR_T)0xf; /* Pointer will almost certainly be invalid */ 20 if (PetscCheckPointer(ptr,PETSC_INT)) {ierr = PetscPrintf(PETSC_COMM_SELF,"Mistook invalid pointer %p for valid\n",(void*)ptr);CHKERRQ(ierr);} 21 } 22 ierr = PetscFinalize(); 23 return ierr; 24 } 25 26 /*TEST 27 28 test: 29 args: -check_pointer_intensity 1 30 TODO: reports Mistook invalid pointer 0xfffffffffffffff0 for valid or Free'd pointer is still accessible 31 32 TEST*/ 33