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// RUN: %clang_cc1 -fsyntax-only -verify %s
// RUN: %clang_cc1 -fsyntax-only -triple x86_64-apple-darwin9 -verify %s
int a[10];
int f0() {
return __builtin_object_size(&a); // expected-error {{too few arguments to function}}
}
int f1() {
return (__builtin_object_size(&a, 0) +
__builtin_object_size(&a, 1) +
__builtin_object_size(&a, 2) +
__builtin_object_size(&a, 3));
}
int f2() {
return __builtin_object_size(&a, -1); // expected-error {{argument value -1 is outside the valid range [0, 3]}}
}
int f3() {
return __builtin_object_size(&a, 4); // expected-error {{argument value 4 is outside the valid range [0, 3]}}
}
// rdar://6252231 - cannot call vsnprintf with va_list on x86_64
void f4(const char *fmt, ...) {
__builtin_va_list args;
__builtin___vsnprintf_chk (0, 42, 0, 11, fmt, args); // expected-warning {{'__builtin___vsnprintf_chk' will always overflow; destination buffer has size 11, but size argument is 42}}
}
// rdar://18334276
typedef __typeof__(sizeof(int)) size_t;
void * memcset(void *restrict dst, int src, size_t n);
void * memcpy(void *restrict dst, const void *restrict src, size_t n);
#define memset(dest, src, len) __builtin___memset_chk(dest, src, len, __builtin_object_size(dest, 0))
#define memcpy(dest, src, len) __builtin___memcpy_chk(dest, src, len, __builtin_object_size(dest, 0))
#define memcpy1(dest, src, len) __builtin___memcpy_chk(dest, src, len, __builtin_object_size(dest, 4))
#define NULL ((void *)0)
void f5(void)
{
char buf[10];
memset((void *)0x100000000ULL, 0, 0x1000);
memcpy((char *)NULL + 0x10000, buf, 0x10);
memcpy1((char *)NULL + 0x10000, buf, 0x10); // expected-error {{argument value 4 is outside the valid range [0, 3]}}
}
// rdar://18431336
void f6(void)
{
char b[5];
char buf[10];
__builtin___memccpy_chk (buf, b, '\0', sizeof(b), __builtin_object_size (buf, 0));
__builtin___memccpy_chk (b, buf, '\0', sizeof(buf), __builtin_object_size (b, 0)); // expected-warning {{'__builtin___memccpy_chk' will always overflow; destination buffer has size 5, but size argument is 10}}
}
int pr28314(void) {
struct {
struct InvalidField a; // expected-error{{has incomplete type}} expected-note 3{{forward declaration of 'struct InvalidField'}}
char b[0];
} *p;
struct {
struct InvalidField a; // expected-error{{has incomplete type}}
char b[1];
} *p2;
struct {
struct InvalidField a; // expected-error{{has incomplete type}}
char b[2];
} *p3;
int a = 0;
a += __builtin_object_size(&p->a, 0);
a += __builtin_object_size(p->b, 0);
a += __builtin_object_size(p2->b, 0);
a += __builtin_object_size(p3->b, 0);
return a;
}
int pr31843() {
int n = 0;
struct { int f; } a;
int b;
n += __builtin_object_size(({&(b ? &a : &a)->f; pr31843;}), 0); // expected-warning{{expression result unused}}
struct statfs { char f_mntonname[1024];};
struct statfs *outStatFSBuf;
n += __builtin_object_size(outStatFSBuf->f_mntonname ? "" : "", 1); // expected-warning{{address of array}}
n += __builtin_object_size(outStatFSBuf->f_mntonname ?: "", 1);
return n;
}
typedef struct {
char string[512];
} NestedArrayStruct;
typedef struct {
int x;
NestedArrayStruct session[];
} IncompleteArrayStruct;
void rd36094951_IAS_builtin_object_size_assertion(IncompleteArrayStruct *p) {
#define rd36094951_CHECK(mode) \
__builtin___strlcpy_chk(p->session[0].string, "ab", 2, \
__builtin_object_size(p->session[0].string, mode))
rd36094951_CHECK(0);
rd36094951_CHECK(1);
rd36094951_CHECK(2);
rd36094951_CHECK(3);
}
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