1 // RUN: %clang_cc1 %s -fsyntax-only -verify -verify=c2x -pedantic -Wno-strict-prototypes
2 
3 // PR1892, PR11354
4 void f(double a[restrict][5]) { __typeof(a) x = 10; } // expected-error {{(aka 'double (*restrict)[5]')}}
5 
6 int foo (__const char *__path);
7 int foo(__const char *__restrict __file);
8 
9 void func(const char*); // expected-note {{previous declaration is here}}
10 void func(char*); // expected-error{{conflicting types for 'func'}}
11 
12 void g(int (*)(const void **, const void **));
13 void g(int (*compar)()) {
14 }
15 
16 void h();  // expected-note {{previous declaration is here}}
17 void h (const char *fmt, ...) {} // expected-error{{conflicting types for 'h'}}
18 
19 // PR1965
20 int t5(b);          // expected-error {{parameter list without types}}
21 int t6(int x, g);   // expected-error {{type specifier missing, defaults to 'int'}}
22 
23 int t7(, );       // expected-error {{expected parameter declarator}} expected-error {{expected parameter declarator}}
24 int t8(, int a);  // expected-error {{expected parameter declarator}}
25 int t9(int a, );  // expected-error {{expected parameter declarator}}
26 
27 
28 // PR2042
29 void t10(){}
30 void t11(){t10(1);} // expected-warning{{too many arguments}}
31 
32 // PR3208
33 void t12(int) {}  // c2x-warning{{omitting the parameter name in a function definition is a C2x extension}}
34 
35 // PR2790
36 void t13() {
37   return 0; // expected-error {{void function 't13' should not return a value}}
38 }
39 int t14() {
40   return; // expected-error {{non-void function 't14' should return a value}}
41 }
42 
43 // <rdar://problem/6097326>
44 y(y) { return y; } // expected-error{{parameter 'y' was not declared, defaults to 'int'; ISO C99 and later do not support implicit int}} \
45                    // expected-error{{type specifier missing, defaults to 'int'}}
46 
47 
48 // PR3137, <rdar://problem/6127293>
49 extern int g0_3137(void);
50 void f0_3137() {
51   int g0_3137(void);
52 }
53 void f1_3137() {
54   int (*fp)(void) = g0_3137;
55 }
56 
57 void f1static() {
58   static void f2static(int); // expected-error{{function declared in block scope cannot have 'static' storage class}}
59   register void f2register(int); // expected-error{{illegal storage class on function}}
60 }
61 
62 struct incomplete_test a(void) {} // expected-error{{incomplete result type 'struct incomplete_test' in function definition}} \
63     // expected-note{{forward declaration of 'struct incomplete_test'}}
64 
65 
66 extern __inline
67 __attribute__((__gnu_inline__))
68 void gnu_inline1() {}
69 
70 void
71 __attribute__((__gnu_inline__)) // expected-warning {{'gnu_inline' attribute requires function to be marked 'inline', attribute ignored}}
72 gnu_inline2() {}
73 
74 
75 // rdar://6802350
76 inline foo_t invalid_type() {  // expected-error {{unknown type name 'foo_t'}}
77 }
78 
79 typedef void fn_t(void);
80 fn_t t17;
81 
82 // PR4049
83 unknown_type t18(void*) {   // expected-error {{unknown type name 'unknown_type'}} \
84                             // c2x-warning {{omitting the parameter name in a function definition is a C2x extension}}
85 }
86 
87 unknown_type t19(int* P) {   // expected-error {{unknown type name 'unknown_type'}}
88   P = P+1;  // no warning.
89 }
90 
91 // missing ',' before '...'
92 void t20(int i...) { } // expected-error {{requires a comma}}
93 
94 int n;
95 void t21(int n, int (*array)[n]);
96 
97 int func_e(int x) {
98   int func_n(int y) { // expected-error {{function definition is not allowed here}}
99     if (y > 22) {
100       return y+2;
101     } else {
102       return y-2;
103     }
104   }
105   return x + 3;
106 }
107 
108 void decays(int a[3][3]);   // expected-note {{passing argument to parameter 'a' here}}
109 void no_decay(int (*a)[3]); // expected-note {{passing argument to parameter 'a' here}}
110 
111 void t22(int *ptr, int (*array)[3]) {
112   decays(ptr);   // expected-warning {{incompatible pointer types passing 'int *' to parameter of type 'int (*)[3]'}}
113   no_decay(ptr); // expected-warning {{incompatible pointer types passing 'int *' to parameter of type 'int (*)[3]'}}
114   decays(array);
115   no_decay(array);
116 }
117 
118 void const Bar (void); // ok on decl
119 // PR 20146
120 void const Bar (void) // expected-warning {{function cannot return qualified void type 'const void'}}
121 {
122 }
123