1 #include <stdarg.h>
2 
3 void firstThingInTheFileThatNeedsNullabilityIsAnArray(int ints[]);
4 #if ARRAYS_CHECKED
5 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
6 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
7 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
8 #endif
9 
10 int *secondThingInTheFileThatNeedsNullabilityIsAPointer;
11 #if !ARRAYS_CHECKED
12 // expected-warning@-2 {{pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified)}}
13 // expected-note@-3 {{insert '_Nullable' if the pointer may be null}}
14 // expected-note@-4 {{insert '_Nonnull' if the pointer should never be null}}
15 #endif
16 
17 int *_Nonnull triggerConsistencyWarnings;
18 
19 void test(
20     int ints[],
21 #if ARRAYS_CHECKED
22 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
23 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
24 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
25 #endif
26     void *ptrs[], // expected-warning {{pointer is missing a nullability type specifier}}
27 // expected-note@-1 {{insert '_Nullable' if the pointer may be null}}
28 // expected-note@-2 {{insert '_Nonnull' if the pointer should never be null}}
29 #if ARRAYS_CHECKED
30 // expected-warning@-4 {{array parameter is missing a nullability type specifier}}
31 // expected-note@-5 {{insert '_Nullable' if the array parameter may be null}}
32 // expected-note@-6 {{insert '_Nonnull' if the array parameter should never be null}}
33 #endif
34     void **nestedPtrs[]); // expected-warning 2 {{pointer is missing a nullability type specifier}}
35 // expected-note@-1 2 {{insert '_Nullable' if the pointer may be null}}
36 // expected-note@-2 2 {{insert '_Nonnull' if the pointer should never be null}}
37 #if ARRAYS_CHECKED
38 // expected-warning@-4 {{array parameter is missing a nullability type specifier}}
39 // expected-note@-5 {{insert '_Nullable' if the array parameter may be null}}
40 // expected-note@-6 {{insert '_Nonnull' if the array parameter should never be null}}
41 #endif
42 
43 void testArraysOK(
44     int ints[_Nonnull],
45     void *ptrs[_Nonnull], // expected-warning {{pointer is missing a nullability type specifier}}
46 // expected-note@-1 {{insert '_Nullable' if the pointer may be null}}
47 // expected-note@-2 {{insert '_Nonnull' if the pointer should never be null}}
48     void **nestedPtrs[_Nonnull]); // expected-warning 2 {{pointer is missing a nullability type specifier}}
49 // expected-note@-1 2 {{insert '_Nullable' if the pointer may be null}}
50 // expected-note@-2 2 {{insert '_Nonnull' if the pointer should never be null}}
51 void testAllOK(
52     int ints[_Nonnull],
53     void * _Nullable ptrs[_Nonnull],
54     void * _Nullable * _Nullable nestedPtrs[_Nonnull]);
55 
56 void testVAList(va_list ok); // no warning
57 
58 #if __cplusplus
59 // Carefully construct a test case such that if a platform's va_list is an array
60 // or pointer type, it gets tested, but otherwise it does not.
61 template<class T, class F>
62 struct pointer_like_or { typedef F type; };
63 template<class T, class F>
64 struct pointer_like_or<T*, F> { typedef T *type; };
65 template<class T, class F>
66 struct pointer_like_or<T* const, F> { typedef T * const type; };
67 template<class T, class F>
68 struct pointer_like_or<T[], F> { typedef T type[]; };
69 template<class T, class F, unsigned size>
70 struct pointer_like_or<T[size], F> { typedef T type[size]; };
71 
72 void testVAListWithNullability(
73   pointer_like_or<va_list, void*>::type _Nonnull x); // no errors
74 #endif
75 
76 void nestedArrays(int x[5][1]) {}
77 #if ARRAYS_CHECKED
78 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
79 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
80 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
81 #endif
82 void nestedArraysOK(int x[_Nonnull 5][1]) {}
83 
84 #if !__cplusplus
85 void staticOK(int x[static 5][1]){}
86 #endif
87 
88 int globalArraysDoNotNeedNullability[5];
89 
90 typedef int INTS[4];
91 
92 void typedefTest(
93     INTS x,
94 #if ARRAYS_CHECKED
95 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
96 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
97 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
98 #endif
99     INTS _Nonnull x2,
100     _Nonnull INTS x3,
101     INTS y[2],
102 #if ARRAYS_CHECKED
103 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
104 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
105 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
106 #endif
107     INTS y2[_Nonnull 2]);
108 
109 
110 #pragma clang assume_nonnull begin
111 void testAssumeNonnull(
112   int ints[],
113 #if ARRAYS_CHECKED
114 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
115 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
116 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
117 #endif
118   void *ptrs[],
119 #if ARRAYS_CHECKED
120 // expected-warning@-2 {{array parameter is missing a nullability type specifier}}
121 // expected-note@-3 {{insert '_Nullable' if the array parameter may be null}}
122 // expected-note@-4 {{insert '_Nonnull' if the array parameter should never be null}}
123 #endif
124   void **nestedPtrs[]); // expected-warning 2 {{pointer is missing a nullability type specifier}}
125 // expected-note@-1 2 {{insert '_Nullable' if the pointer may be null}}
126 // expected-note@-2 2 {{insert '_Nonnull' if the pointer should never be null}}
127 #if ARRAYS_CHECKED
128 // expected-warning@-4 {{array parameter is missing a nullability type specifier}}
129 // expected-note@-5 {{insert '_Nullable' if the array parameter may be null}}
130 // expected-note@-6 {{insert '_Nonnull' if the array parameter should never be null}}
131 #endif
132 
133 void testAssumeNonnullAllOK(
134     int ints[_Nonnull],
135     void * _Nullable ptrs[_Nonnull],
136     void * _Nullable * _Nullable nestedPtrs[_Nonnull]);
137 void testAssumeNonnullAllOK2(
138     int ints[_Nonnull],
139     void * ptrs[_Nonnull], // backwards-compatibility
140     void * _Nullable * _Nullable nestedPtrs[_Nonnull]);
141 #pragma clang assume_nonnull end
142