1 // RUN: %clang_cc1 -fsyntax-only -Wdocumentation -Wmissing-prototypes -verify %s
2 // RUN: %clang_cc1 -fsyntax-only -Wdocumentation -Wmissing-prototypes -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
3
4 int f(); // expected-note{{this declaration is not a prototype; add parameter declarations to make it one}}
5 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:{{.*}}-[[@LINE-1]]:{{.*}}}:"{{.*}}"
6
f(int x)7 int f(int x) { return x; } // expected-warning{{no previous prototype for function 'f'}}
8
g(int x)9 static int g(int x) { return x; }
10
h(int x)11 int h(int x) { return x; } // expected-warning{{no previous prototype for function 'h'}}
12 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
13 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:1-[[@LINE-2]]:1}:"static "
14
15 static int g2();
16
g2(int x)17 int g2(int x) { return x; }
18
g3(int x)19 extern int g3(int x) { return x; } // expected-warning{{no previous prototype for function 'g3'}}
20 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
21 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-2]]:{{.*}}-[[@LINE-2]]:{{.*}}}:"{{.*}}"
22
23 void test(void);
24
25 int h3(); // expected-note{{this declaration is not a prototype; add parameter declarations to make it one}}
26 // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:{{.*}}-[[@LINE-1]]:{{.*}}}:"{{.*}}"
27 int h4(int);
28 int h4();
29
test(void)30 void test(void) {
31 int h2(int x);
32 int h3(int x);
33 int h4();
34 }
35
h2(int x)36 int h2(int x) { return x; } // expected-warning{{no previous prototype for function 'h2'}}
37 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
h3(int x)38 int h3(int x) { return x; } // expected-warning{{no previous prototype for function 'h3'}}
h4(int x)39 int h4(int x) { return x; }
40
41 int f2(int);
42 int f2();
43
f2(int x)44 int f2(int x) { return x; }
45
46 // rdar://6759522
main(void)47 int main(void) { return 0; }
48
49 void not_a_prototype_test(); // expected-note{{this declaration is not a prototype; add 'void' to make it a prototype for a zero-parameter function}}
50 // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:27-[[@LINE-1]]:27}:"void"
not_a_prototype_test()51 void not_a_prototype_test() { } // expected-warning{{no previous prototype for function 'not_a_prototype_test'}}
52
get_const()53 const int *get_const() { // expected-warning{{no previous prototype for function 'get_const'}}
54 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
55 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:1-[[@LINE-2]]:1}:"static "
56 return (void *)0;
57 }
58
59 struct MyStruct {};
60
get_struct()61 const struct MyStruct get_struct() { // expected-warning{{no previous prototype for function 'get_struct'}}
62 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
63 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:1-[[@LINE-2]]:1}:"static "
64 struct MyStruct ret;
65 return ret;
66 }
67
68 // Turn off clang-format for white-space dependent testing.
69 // clang-format off
70 // Two spaces between cost and struct
get_struct_2()71 const struct MyStruct get_struct_2() { // expected-warning{{no previous prototype for function 'get_struct_2'}}
72 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
73 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:1-[[@LINE-2]]:1}:"static "
74 struct MyStruct ret;
75 return ret;
76 }
77
78 // Two spaces bewteen const and struct
get_struct_ptr()79 const struct MyStruct* get_struct_ptr() { // expected-warning{{no previous prototype for function 'get_struct_ptr'}}
80 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
81 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:1-[[@LINE-2]]:1}:"static "
82 return (void*)0;
83 }
84
85 // Random comment before const.
get_struct_3()86 /*some randome comment*/const struct MyStruct* get_struct_3() { // expected-warning{{no previous prototype for function 'get_struct_3'}}
87 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
88 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:25-[[@LINE-2]]:25}:"static "
89 return (void*)0;
90 }
91
92 // Random comment after const.
get_struct_4()93 const/*some randome comment*/ struct MyStruct* get_struct_4() { // expected-warning{{no previous prototype for function 'get_struct_4'}}
94 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
95 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:1-[[@LINE-2]]:1}:"static "
96 return (void*)0;
97 }
98 // clang-format on
99
100 #define MY_CONST const
101
102 // Since we can't easily understand what MY_CONST means while preparing the
103 // diagnostic, the fix-it suggests to add 'static' in a non-idiomatic place.
get_struct_nyi()104 MY_CONST struct MyStruct *get_struct_nyi() { // expected-warning{{no previous prototype for function 'get_struct_nyi'}}
105 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
106 // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:10-[[@LINE-2]]:10}:"static "
107 return (void *)0;
108 }
109