1 // RUN: %clang_cc1 %s -fsyntax-only -verify -verify=c2x -pedantic
2 // RUN: %clang_cc1 %s -fsyntax-only -std=c2x -verify -pedantic
3
4 // PR1892, PR11354
f(double a[restrict][5])5 void f(double a[restrict][5]) { __typeof(a) x = 10; } // expected-warning {{(aka 'double (*restrict)[5]')}}
6
7 int foo (__const char *__path);
8 int foo(__const char *__restrict __file);
9
10 void func(const char*); // expected-note {{previous declaration is here}}
11 void func(char*); // expected-error{{conflicting types for 'func'}}
12
13 void g(int (*)(const void **, const void **));
g(int (* compar)())14 void g(int (*compar)()) {
15 }
16
17 void h(); // expected-note {{previous declaration is here}}
h(const char * fmt,...)18 void h (const char *fmt, ...) {} // expected-error{{conflicting types for 'h'}}
19
20 // PR1965
21 int t5(b); // expected-error {{parameter list without types}}
22 int t6(int x, g); // expected-warning {{type specifier missing, defaults to 'int'}}
23
24 int t7(, ); // expected-error {{expected parameter declarator}} expected-error {{expected parameter declarator}}
25 int t8(, int a); // expected-error {{expected parameter declarator}}
26 int t9(int a, ); // expected-error {{expected parameter declarator}}
27
28
29 // PR2042
t10()30 void t10(){}
t11()31 void t11(){t10(1);} // expected-warning{{too many arguments}}
32
33 // PR3208
t12(int)34 void t12(int) {} // c2x-warning{{omitting the parameter name in a function definition is a C2x extension}}
35
36 // PR2790
t13()37 void t13() {
38 return 0; // expected-error {{void function 't13' should not return a value}}
39 }
t14()40 int t14() {
41 return; // expected-error {{non-void function 't14' should return a value}}
42 }
43
44 // <rdar://problem/6097326>
y(y)45 y(y) { return y; } // expected-warning{{parameter 'y' was not declared, defaulting to type 'int'}} \
46 // expected-warning{{type specifier missing, defaults to 'int'}}
47
48
49 // PR3137, <rdar://problem/6127293>
50 extern int g0_3137(void);
f0_3137()51 void f0_3137() {
52 int g0_3137(void);
53 }
f1_3137()54 void f1_3137() {
55 int (*fp)(void) = g0_3137;
56 }
57
f1static()58 void f1static() {
59 static void f2static(int); // expected-error{{function declared in block scope cannot have 'static' storage class}}
60 register void f2register(int); // expected-error{{illegal storage class on function}}
61 }
62
a(void)63 struct incomplete_test a(void) {} // expected-error{{incomplete result type 'struct incomplete_test' in function definition}} \
64 // expected-note{{forward declaration of 'struct incomplete_test'}}
65
66
67 extern __inline
68 __attribute__((__gnu_inline__))
gnu_inline1()69 void gnu_inline1() {}
70
71 void
72 __attribute__((__gnu_inline__)) // expected-warning {{'gnu_inline' attribute requires function to be marked 'inline', attribute ignored}}
gnu_inline2()73 gnu_inline2() {}
74
75
76 // rdar://6802350
invalid_type()77 inline foo_t invalid_type() { // expected-error {{unknown type name 'foo_t'}}
78 }
79
80 typedef void fn_t(void);
81 fn_t t17;
82
83 // PR4049
t18(void *)84 unknown_type t18(void*) { // expected-error {{unknown type name 'unknown_type'}} \
85 // c2x-warning {{omitting the parameter name in a function definition is a C2x extension}}
86 }
87
t19(int * P)88 unknown_type t19(int* P) { // expected-error {{unknown type name 'unknown_type'}}
89 P = P+1; // no warning.
90 }
91
92 // missing ',' before '...'
t20(int i...)93 void t20(int i...) { } // expected-error {{requires a comma}}
94
95 int n;
96 void t21(int n, int (*array)[n]);
97
func_e(int x)98 int func_e(int x) {
99 int func_n(int y) { // expected-error {{function definition is not allowed here}}
100 if (y > 22) {
101 return y+2;
102 } else {
103 return y-2;
104 }
105 }
106 return x + 3;
107 }
108
109 void decays(int a[3][3]); // expected-note {{passing argument to parameter 'a' here}}
110 void no_decay(int (*a)[3]); // expected-note {{passing argument to parameter 'a' here}}
111
t22(int * ptr,int (* array)[3])112 void t22(int *ptr, int (*array)[3]) {
113 decays(ptr); // expected-warning {{incompatible pointer types passing 'int *' to parameter of type 'int (*)[3]'}}
114 no_decay(ptr); // expected-warning {{incompatible pointer types passing 'int *' to parameter of type 'int (*)[3]'}}
115 decays(array);
116 no_decay(array);
117 }
118
119 void const Bar (void); // ok on decl
120 // PR 20146
Bar(void)121 void const Bar (void) // expected-warning {{function cannot return qualified void type 'const void'}}
122 {
123 }
124