1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -Wcast-align -verify %s
2 
3 // Simple casts.
4 void 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.
11 void 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.
31 struct __attribute__((aligned(16))) A {
32   char buffer[16];
33 };
34 void 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.
39 void test3(char *P) {
40   struct B *b = (struct B*) P;
41 }
42