clang-1/test/Analysis/unix-fns.c

53 строки
1.8 KiB
C

// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-check-objc-mem %s -analyzer-store=region -fblocks -verify
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-check-objc-mem %s -analyzer-store=basic -fblocks -verify
struct _opaque_pthread_once_t {
long __sig;
char __opaque[8];
};
typedef struct _opaque_pthread_once_t __darwin_pthread_once_t;
typedef __darwin_pthread_once_t pthread_once_t;
int pthread_once(pthread_once_t *, void (*)(void));
typedef void (^dispatch_block_t)(void);
typedef long dispatch_once_t;
void dispatch_once(dispatch_once_t *predicate, dispatch_block_t block);
#ifndef O_CREAT
#define O_CREAT 0x0200
#define O_RDONLY 0x0000
#endif
int open(const char *, int, ...);
int close(int fildes);
void test_open(const char *path) {
int fd;
fd = open(path, O_RDONLY); // no-warning
if (!fd)
close(fd);
fd = open(path, O_CREAT); // expected-warning{{Call to 'open' requires a third argument when the 'O_CREAT' flag is set}}
if (!fd)
close(fd);
}
void test_dispatch_once() {
dispatch_once_t pred = 0;
do { if (__builtin_expect(*(&pred), ~0l) != ~0l) dispatch_once((&pred), (^() {})); } while (0); // expected-warning{{Call to 'dispatch_once' uses the local variable 'pred' for the predicate value}}
}
void test_dispatch_once_neg() {
static dispatch_once_t pred = 0;
do { if (__builtin_expect(*(&pred), ~0l) != ~0l) dispatch_once((&pred), (^() {})); } while (0); // no-warning
}
void test_pthread_once_aux();
void test_pthread_once() {
pthread_once_t pred = {0x30B1BCBA, {0}};
pthread_once(&pred, test_pthread_once_aux); // expected-warning{{Call to 'pthread_once' uses the local variable 'pred' for the "control" value}}
}
void test_pthread_once_neg() {
static pthread_once_t pred = {0x30B1BCBA, {0}};
pthread_once(&pred, test_pthread_once_aux); // no-warning
}