Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 1 | // RUN: %clang_cc1 -analyze -analyzer-checker=core -w -verify %s |
Jordan Rose | fe6a011 | 2012-07-02 19:28:21 +0000 | [diff] [blame] | 2 | |
| 3 | @interface MyObject |
| 4 | - (void)takePointer:(void *)ptr __attribute__((nonnull(1))); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 5 | - (void)takePointerArg:(void *)__attribute__((nonnull)) ptr; |
| 6 | |
Jordan Rose | fe6a011 | 2012-07-02 19:28:21 +0000 | [diff] [blame] | 7 | @end |
| 8 | |
| 9 | void testNonNullMethod(int *p, MyObject *obj) { |
| 10 | if (p) |
| 11 | return; |
| 12 | [obj takePointer:p]; // expected-warning{{nonnull}} |
| 13 | } |
| 14 | |
| 15 | |
| 16 | @interface Subclass : MyObject |
| 17 | // [[nonnull]] is an inherited attribute. |
| 18 | - (void)takePointer:(void *)ptr; |
| 19 | @end |
| 20 | |
| 21 | void testSubclass(int *p, Subclass *obj) { |
| 22 | if (p) |
| 23 | return; |
| 24 | [obj takePointer:p]; // expected-warning{{nonnull}} |
| 25 | } |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 26 | |
| 27 | void testSubclassArg(int *p, Subclass *obj) { |
| 28 | if (p) |
| 29 | return; |
| 30 | [obj takePointerArg:p]; // expected-warning{{nonnull}} |
| 31 | } |
| 32 | |
| 33 | |
| 34 | union rdar16153464_const_cp_t { |
| 35 | const struct rdar16153464_cczp *zp; |
| 36 | const struct rdar16153464_cczp_prime *prime; |
| 37 | } __attribute__((transparent_union)); |
| 38 | |
| 39 | struct rdar16153464_header { |
| 40 | union rdar16153464_const_cp_t cp; |
| 41 | unsigned char pad[16 - sizeof(union rdar16153464_const_cp_t *)]; |
| 42 | } __attribute__((aligned(16))); |
| 43 | |
| 44 | |
| 45 | struct rdar16153464_full_ctx { |
| 46 | struct rdar16153464_header hdr; |
| 47 | } __attribute__((aligned(16))); |
| 48 | |
| 49 | |
| 50 | struct rdar16153464_pub_ctx { |
| 51 | struct rdar16153464_header hdr; |
| 52 | } __attribute__((aligned(16))); |
| 53 | |
| 54 | |
| 55 | union rdar16153464_full_ctx_t { |
| 56 | struct rdar16153464_full_ctx *_full; |
| 57 | struct rdar16153464_header *hdr; |
| 58 | struct rdar16153464_body *body; |
| 59 | struct rdar16153464_public *pub; |
| 60 | } __attribute__((transparent_union)); |
| 61 | |
| 62 | union rdar16153464_pub_ctx_t { |
| 63 | struct rdar16153464_pub_ctx *_pub; |
| 64 | struct rdar16153464_full_ctx *_full; |
| 65 | struct rdar16153464_header *hdr; |
| 66 | struct rdar16153464_body *body; |
| 67 | struct rdar16153464_public *pub; |
| 68 | union rdar16153464_full_ctx_t innert; |
| 69 | } __attribute__((transparent_union)); |
| 70 | |
| 71 | int rdar16153464(union rdar16153464_full_ctx_t inner) |
| 72 | { |
| 73 | extern void rdar16153464_check(union rdar16153464_pub_ctx_t outer) __attribute((nonnull(1))); |
| 74 | rdar16153464_check((union rdar16153464_pub_ctx_t){ .innert = inner }); // no-warning |
| 75 | rdar16153464_check(inner); // no-warning |
| 76 | rdar16153464_check(0); // expected-warning{{nonnull}} |
| 77 | } |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 78 | |
| 79 | // Multiple attributes, the basic case |
| 80 | void multipleAttributes_1(char *p, char *q) __attribute((nonnull(1))) __attribute((nonnull(2))); |
| 81 | |
| 82 | void testMultiple_1(void) { |
| 83 | char c; |
| 84 | multipleAttributes_1(&c, &c); // no-warning |
| 85 | } |
| 86 | |
| 87 | void testMultiple_2(void) { |
| 88 | char c; |
| 89 | multipleAttributes_1(0, &c); // expected-warning{{nonnull}} |
| 90 | } |
| 91 | |
| 92 | void testMultiple_3(void) { |
| 93 | char c; |
| 94 | multipleAttributes_1(&c, 0); // expected-warning{{nonnull}} |
| 95 | } |
| 96 | |
| 97 | void testMultiple_4(void) { |
| 98 | multipleAttributes_1(0, 0);// expected-warning{{nonnull}} |
| 99 | } |
| 100 | |
| 101 | // Multiple attributes, multiple prototypes |
| 102 | void multipleAttributes_2(char *p, char *q) __attribute((nonnull(1))); |
| 103 | void multipleAttributes_2(char *p, char *q) __attribute((nonnull(2))); |
| 104 | |
| 105 | void testMultiple_5(void) { |
| 106 | char c; |
| 107 | multipleAttributes_2(0, &c);// expected-warning{{nonnull}} |
| 108 | } |
| 109 | |
| 110 | void testMultiple_6(void) { |
| 111 | char c; |
| 112 | multipleAttributes_2(&c, 0);// expected-warning{{nonnull}} |
| 113 | } |
| 114 | |
| 115 | void testMultiple_7(void) { |
| 116 | multipleAttributes_2(0, 0);// expected-warning{{nonnull}} |
| 117 | } |
| 118 | |
| 119 | // Multiple attributes, same index |
| 120 | void multipleAttributes_3(char *p, char *q) __attribute((nonnull(1))) __attribute((nonnull(1))); |
| 121 | |
| 122 | void testMultiple_8(void) { |
| 123 | char c; |
| 124 | multipleAttributes_3(0, &c); // expected-warning{{nonnull}} |
| 125 | } |
| 126 | |
| 127 | void testMultiple_9(void) { |
| 128 | char c; |
| 129 | multipleAttributes_3(&c, 0); // no-warning |
| 130 | } |
| 131 | |
| 132 | // Multiple attributes, the middle argument is missing an attribute |
| 133 | void multipleAttributes_4(char *p, char *q, char *r) __attribute((nonnull(1))) __attribute((nonnull(3))); |
| 134 | |
| 135 | void testMultiple_10(void) { |
| 136 | char c; |
| 137 | multipleAttributes_4(0, &c, &c); // expected-warning{{nonnull}} |
| 138 | } |
| 139 | |
| 140 | void testMultiple_11(void) { |
| 141 | char c; |
| 142 | multipleAttributes_4(&c, 0, &c); // no-warning |
| 143 | } |
| 144 | |
| 145 | void testMultiple_12(void) { |
| 146 | char c; |
| 147 | multipleAttributes_4(&c, &c, 0); // expected-warning{{nonnull}} |
| 148 | } |
| 149 | |
| 150 | |
| 151 | // Multiple attributes, when the last is without index |
| 152 | void multipleAttributes_all_1(char *p, char *q) __attribute((nonnull(1))) __attribute((nonnull)); |
| 153 | |
| 154 | void testMultiple_13(void) { |
| 155 | char c; |
| 156 | multipleAttributes_all_1(0, &c); // expected-warning{{nonnull}} |
| 157 | } |
| 158 | |
| 159 | void testMultiple_14(void) { |
| 160 | char c; |
| 161 | multipleAttributes_all_1(&c, 0); // expected-warning{{nonnull}} |
| 162 | } |
| 163 | |
| 164 | // Multiple attributes, when the first is without index |
| 165 | void multipleAttributes_all_2(char *p, char *q) __attribute((nonnull)) __attribute((nonnull(2))); |
| 166 | |
| 167 | void testMultiple_15(void) { |
| 168 | char c; |
| 169 | multipleAttributes_all_2(0, &c); // expected-warning{{nonnull}} |
| 170 | } |
| 171 | |
| 172 | void testMultiple_16(void) { |
| 173 | char c; |
| 174 | multipleAttributes_all_2(&c, 0); // expected-warning{{nonnull}} |
| 175 | } |
| 176 | |
| 177 | void testVararg(int k, void *p) { |
| 178 | extern void testVararg_check(int, ...) __attribute__((nonnull)); |
| 179 | void *n = 0; |
| 180 | testVararg_check(0); |
| 181 | testVararg_check(1, p); |
| 182 | if (k == 1) |
| 183 | testVararg_check(1, n); // expected-warning{{nonnull}} |
| 184 | testVararg_check(2, p, p); |
| 185 | if (k == 2) |
| 186 | testVararg_check(2, n, p); // expected-warning{{nonnull}} |
| 187 | if (k == 3) |
| 188 | testVararg_check(2, p, n); // expected-warning{{nonnull}} |
| 189 | } |
| 190 | |
| 191 | void testNotPtr() { |
| 192 | struct S { int a; int b; int c; } s = {}; |
| 193 | extern void testNotPtr_check(struct S, int) __attribute__((nonnull(1, 2))); |
| 194 | testNotPtr_check(s, 0); |
| 195 | } |