/* * Copyright (c) 2018-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ #include "my_typedef.h" struct st { int field; }; int get_field(t* x) { return x->field; } void call_get_field_cond_Bad() { int a[5]; t x = {0}; if (get_field_wrapper(&x)) { a[10] = 0; } else { a[10] = 0; } } void call_get_field_Good() { int a[5]; t x = {0}; a[get_field_wrapper(&x)] = 0; } void call_get_field_Bad() { int a[5]; t x = {10}; a[get_field_wrapper(&x)] = 0; } struct List { struct List* next; struct List* prev; int v; }; int get_v(struct List* l) { return l->next->prev->v; } int call_get_v_Good() { int a[10]; struct List* l = (struct List*)malloc(sizeof(struct List)); struct List* next = (struct List*)malloc(sizeof(struct List)); l->next = next; next->prev = l; l->v = 0; next->v = 10; a[get_v(l)] = 0; } int call_get_v_Bad() { int a[10]; struct List* l = (struct List*)malloc(sizeof(struct List)); struct List* next = (struct List*)malloc(sizeof(struct List)); l->next = next; next->prev = l; l->v = 10; next->v = 0; a[get_v(l)] = 0; } // [l->next->prev->next->prev->v] is abstracted in [l->next->prev.*.v]. int get_v2(struct List* l) { return l->next->prev->next->prev->v; } int call_get_v2_Good_FP() { int a[10]; struct List* l = (struct List*)malloc(sizeof(struct List)); struct List* next = (struct List*)malloc(sizeof(struct List)); l->next = next; next->prev = l; l->v = 0; next->v = 10; a[get_v2(l)] = 0; } int call_get_v2_Bad() { int a[10]; struct List* l = (struct List*)malloc(sizeof(struct List)); struct List* next = (struct List*)malloc(sizeof(struct List)); l->next = next; next->prev = l; l->v = 10; next->v = 0; a[get_v2(l)] = 0; }