33 lines · c
1// RUN: %clang_analyze_cc1 -analyzer-checker=core -verify %s2 3typedef unsigned uintptr_t;4 5void f1(void) {6 int *p;7 *p = 0; // expected-warning{{Dereference of undefined pointer value}}8}9 10struct foo_struct {11 int x;12};13 14int f2(void) {15 struct foo_struct *p;16 17 return p->x++; // expected-warning{{Access to field 'x' results in a dereference of an undefined pointer value (loaded from variable 'p')}}18}19 20int f3(void) {21 char *x;22 int i = 2;23 24 return x[i + 1]; // expected-warning{{Array access (from variable 'x') results in an undefined pointer dereference}}25}26 27int f3_b(void) {28 char *x;29 int i = 2;30 31 return x[i + 1]++; // expected-warning{{Array access (from variable 'x') results in an undefined pointer dereference}}32}33