array-bounds-ptr-arith.c revision 00e1f6f5fed4f33f67181578be0232accd342282 
1// RUN: %clang_cc1 -verify -Warray-bounds-pointer-arithmetic %s
2
3// Test case from PR10615
4struct ext2_super_block{
5  unsigned char s_uuid[8]; // expected-note {{declared here}}
6};
7void* ext2_statfs (struct ext2_super_block *es,int a)
8{
9	 return (void *)es->s_uuid + sizeof(int); // no-warning
10}
11void* broken (struct ext2_super_block *es,int a)
12{
13	 return (void *)es->s_uuid + 80; // expected-warning {{refers past the end of the array}}
14}
15
16// Test case reduced from PR11594
17struct S { int n; };
18void pr11594(struct S *s) {
19  int a[10];
20  int *p = a - s->n;
21}
22
23// Test case reduced from <rdar://problem/11387038>.  This resulted in
24// an assertion failure because of the typedef instead of an explicit
25// constant array type.
26struct RDar11387038 {};
27typedef struct RDar11387038 RDar11387038Array[1];
28struct RDar11387038_Table {
29  RDar11387038Array z;
30};
31typedef struct RDar11387038_Table * TPtr;
32typedef TPtr *TabHandle;
33struct RDar11387038_B { TabHandle x; };
34typedef struct RDar11387038_B RDar11387038_B;
35
36void radar11387038() {
37  RDar11387038_B *pRDar11387038_B;
38  struct RDar11387038* y = &(*pRDar11387038_B->x)->z[4];
39}
40