1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -Wcast-align -verify %s
2
3// Simple casts.
4void test0(char *P) {
5  char *a  = (char*)  P;
6  short *b = (short*) P; // expected-warning {{cast from 'char *' to 'short *' increases required alignment from 1 to 2}}
7  int *c   = (int*)   P; // expected-warning {{cast from 'char *' to 'int *' increases required alignment from 1 to 4}}
8}
9
10// Casts from void* are a special case.
11void test1(void *P) {
12  char *a  = (char*)  P;
13  short *b = (short*) P;
14  int *c   = (int*)   P;
15
16  const volatile void *P2 = P;
17  char *d  = (char*)  P2;
18  short *e = (short*) P2;
19  int *f   = (int*)   P2;
20
21  const char *g  = (const char*)  P2;
22  const short *h = (const short*) P2;
23  const int *i   = (const int*)   P2;
24
25  const volatile char *j  = (const volatile char*)  P2;
26  const volatile short *k = (const volatile short*) P2;
27  const volatile int *l   = (const volatile int*)   P2;
28}
29
30// Aligned struct.
31struct __attribute__((aligned(16))) A {
32  char buffer[16];
33};
34void test2(char *P) {
35  struct A *a = (struct A*) P; // expected-warning {{cast from 'char *' to 'struct A *' increases required alignment from 1 to 16}}
36}
37
38// Incomplete type.
39void test3(char *P) {
40  struct B *b = (struct B*) P;
41}
42