merge-decls.c revision 8b8a09e496fbed361d4c8e9e8cc259454a094258 
1// RUN: %clang_cc1 %s -verify -fsyntax-only
2
3void foo(void);
4void foo(void) {}
5void foo(void);
6void foo(void); // expected-note {{previous declaration is here}}
7
8void foo(int); // expected-error {{conflicting types for 'foo'}}
9
10int funcdef()
11{
12 return 0;
13}
14
15int funcdef();
16
17int funcdef2() { return 0; } // expected-note {{previous definition is here}}
18int funcdef2() { return 0; } // expected-error {{redefinition of 'funcdef2'}}
19
20// PR2502
21void (*f)(void);
22void (*f)() = 0;
23
24typedef __attribute__(( ext_vector_type(2) )) int Vi2;
25typedef __attribute__(( ext_vector_type(2) )) float Vf2;
26
27Vf2 g0; // expected-note {{previous definition is here}}
28Vi2 g0; // expected-error {{redefinition of 'g0'}}
29
30_Complex int g1; // expected-note {{previous definition is here}}
31_Complex float g1; // expected-error {{redefinition of 'g1'}}
32
33// rdar://6096412
34extern char i6096412[10];
35extern char i6096412[];
36void foo6096412(void) {
37  int x = sizeof(i6096412);
38}
39
40
41typedef int test1_IA[];
42typedef int test1_A10[10];
43static test1_A10 *test1_f(void);
44void test1_g(void)
45{
46  {
47    extern test1_IA  *test1_f(void);
48  }
49  (void)sizeof(*test1_f());
50}
51
52typedef int test2_IA[];
53typedef int test2_A10[10];
54
55static test2_A10 *test2_f(void);
56static test2_IA  *test2_f(void);
57
58void test2_g(void)
59{
60  (void)sizeof(*test2_f());
61}
62
63int (*test3_f())[10];
64int (*test3_f())[];
65int test3_k = sizeof(*test3_f());
66
67void test4_f(int);
68void test4_f(a)
69  char a;
70{
71  int v[sizeof(a) == 1 ? 1 : -1];
72}
73
74int test5_f(int (*)[10]);
75int test5_f(int (*x)[]) {
76  return sizeof(*x); // expected-error {{invalid application of 'sizeof' to an incomplete type 'int []'}}
77}
78
79void test6_f(int (*a)[11]);
80void test6_f(a)
81   int (*a)[];
82{}
83void test6_g() {
84  int arr[10];
85  test6_f(&arr); // expected-warning {{incompatible pointer types passing 'int (*)[10]' to parameter of type 'int (*)[11]}}
86}
87
88void test7_f(int (*)[10]);
89void test7_f(int (*)[]); // expected-note {{passing argument to parameter here}}
90void test7_g() {
91  int x[5];
92  test7_f(&x); // expected-warning {{incompatible pointer types passing 'int (*)[5]' to parameter of type 'int (*)[10]}}
93}
94