1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
|
// RUN: %clang_analyze_cc1 -analyzer-checker=core -w -verify %s
@interface MyObject
- (void)takePointer:(void *)ptr __attribute__((nonnull(1)));
- (void)takePointerArg:(void *)__attribute__((nonnull)) ptr;
@end
void testNonNullMethod(int *p, MyObject *obj) {
if (p)
return;
[obj takePointer:p]; // expected-warning{{nonnull}}
}
@interface Subclass : MyObject
// [[nonnull]] is an inherited attribute.
- (void)takePointer:(void *)ptr;
@end
void testSubclass(int *p, Subclass *obj) {
if (p)
return;
[obj takePointer:p]; // expected-warning{{nonnull}}
}
void testSubclassArg(int *p, Subclass *obj) {
if (p)
return;
[obj takePointerArg:p]; // expected-warning{{nonnull}}
}
union rdar16153464_const_cp_t {
const struct rdar16153464_cczp *zp;
const struct rdar16153464_cczp_prime *prime;
} __attribute__((transparent_union));
struct rdar16153464_header {
union rdar16153464_const_cp_t cp;
unsigned char pad[16 - sizeof(union rdar16153464_const_cp_t *)];
} __attribute__((aligned(16)));
struct rdar16153464_full_ctx {
struct rdar16153464_header hdr;
} __attribute__((aligned(16)));
struct rdar16153464_pub_ctx {
struct rdar16153464_header hdr;
} __attribute__((aligned(16)));
union rdar16153464_full_ctx_t {
struct rdar16153464_full_ctx *_full;
struct rdar16153464_header *hdr;
struct rdar16153464_body *body;
struct rdar16153464_public *pub;
} __attribute__((transparent_union));
union rdar16153464_pub_ctx_t {
struct rdar16153464_pub_ctx *_pub;
struct rdar16153464_full_ctx *_full;
struct rdar16153464_header *hdr;
struct rdar16153464_body *body;
struct rdar16153464_public *pub;
union rdar16153464_full_ctx_t innert;
} __attribute__((transparent_union));
int rdar16153464(union rdar16153464_full_ctx_t inner)
{
extern void rdar16153464_check(union rdar16153464_pub_ctx_t outer) __attribute((nonnull(1)));
rdar16153464_check((union rdar16153464_pub_ctx_t){ .innert = inner }); // no-warning
rdar16153464_check(inner); // no-warning
rdar16153464_check(0); // expected-warning{{nonnull}}
}
// Multiple attributes, the basic case
void multipleAttributes_1(char *p, char *q) __attribute((nonnull(1))) __attribute((nonnull(2)));
void testMultiple_1(void) {
char c;
multipleAttributes_1(&c, &c); // no-warning
}
void testMultiple_2(void) {
char c;
multipleAttributes_1(0, &c); // expected-warning{{nonnull}}
}
void testMultiple_3(void) {
char c;
multipleAttributes_1(&c, 0); // expected-warning{{nonnull}}
}
void testMultiple_4(void) {
multipleAttributes_1(0, 0);// expected-warning{{nonnull}}
}
// Multiple attributes, multiple prototypes
void multipleAttributes_2(char *p, char *q) __attribute((nonnull(1)));
void multipleAttributes_2(char *p, char *q) __attribute((nonnull(2)));
void testMultiple_5(void) {
char c;
multipleAttributes_2(0, &c);// expected-warning{{nonnull}}
}
void testMultiple_6(void) {
char c;
multipleAttributes_2(&c, 0);// expected-warning{{nonnull}}
}
void testMultiple_7(void) {
multipleAttributes_2(0, 0);// expected-warning{{nonnull}}
}
// Multiple attributes, same index
void multipleAttributes_3(char *p, char *q) __attribute((nonnull(1))) __attribute((nonnull(1)));
void testMultiple_8(void) {
char c;
multipleAttributes_3(0, &c); // expected-warning{{nonnull}}
}
void testMultiple_9(void) {
char c;
multipleAttributes_3(&c, 0); // no-warning
}
// Multiple attributes, the middle argument is missing an attribute
void multipleAttributes_4(char *p, char *q, char *r) __attribute((nonnull(1))) __attribute((nonnull(3)));
void testMultiple_10(void) {
char c;
multipleAttributes_4(0, &c, &c); // expected-warning{{nonnull}}
}
void testMultiple_11(void) {
char c;
multipleAttributes_4(&c, 0, &c); // no-warning
}
void testMultiple_12(void) {
char c;
multipleAttributes_4(&c, &c, 0); // expected-warning{{nonnull}}
}
// Multiple attributes, when the last is without index
void multipleAttributes_all_1(char *p, char *q) __attribute((nonnull(1))) __attribute((nonnull));
void testMultiple_13(void) {
char c;
multipleAttributes_all_1(0, &c); // expected-warning{{nonnull}}
}
void testMultiple_14(void) {
char c;
multipleAttributes_all_1(&c, 0); // expected-warning{{nonnull}}
}
// Multiple attributes, when the first is without index
void multipleAttributes_all_2(char *p, char *q) __attribute((nonnull)) __attribute((nonnull(2)));
void testMultiple_15(void) {
char c;
multipleAttributes_all_2(0, &c); // expected-warning{{nonnull}}
}
void testMultiple_16(void) {
char c;
multipleAttributes_all_2(&c, 0); // expected-warning{{nonnull}}
}
void testVararg(int k, void *p) {
extern void testVararg_check(int, ...) __attribute__((nonnull));
void *n = 0;
testVararg_check(0);
testVararg_check(1, p);
if (k == 1)
testVararg_check(1, n); // expected-warning{{nonnull}}
testVararg_check(2, p, p);
if (k == 2)
testVararg_check(2, n, p); // expected-warning{{nonnull}}
if (k == 3)
testVararg_check(2, p, n); // expected-warning{{nonnull}}
}
void testNotPtr() {
struct S { int a; int b; int c; } s = {};
extern void testNotPtr_check(struct S, int) __attribute__((nonnull(1, 2)));
testNotPtr_check(s, 0);
}
|