forked from OSchip/llvm-project
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
// 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 should be a value from 0 to 3}}
|
|
}
|
|
int f3() {
|
|
return __builtin_object_size(&a, 4); // expected-error {{argument should be a value from 0 to 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}}
|
|
}
|
|
|
|
// 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 should be a value from 0 to 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}}
|
|
}
|
|
|
|
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;
|
|
}
|