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// RUN: %clang_cc1 -analyze -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);
}
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