зеркало из https://github.com/microsoft/clang.git
69 строки
2.2 KiB
C
69 строки
2.2 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -analyze -analyzer-checker=unix.API,osx.API %s -analyzer-store=region -fblocks -verify
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struct _opaque_pthread_once_t {
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long __sig;
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char __opaque[8];
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};
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typedef struct _opaque_pthread_once_t __darwin_pthread_once_t;
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typedef __darwin_pthread_once_t pthread_once_t;
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int pthread_once(pthread_once_t *, void (*)(void));
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typedef long unsigned int __darwin_size_t;
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typedef __darwin_size_t size_t;
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void *malloc(size_t);
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typedef void (^dispatch_block_t)(void);
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typedef long dispatch_once_t;
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void dispatch_once(dispatch_once_t *predicate, dispatch_block_t block);
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#ifndef O_CREAT
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#define O_CREAT 0x0200
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#define O_RDONLY 0x0000
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#endif
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int open(const char *, int, ...);
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int close(int fildes);
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void test_open(const char *path) {
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int fd;
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fd = open(path, O_RDONLY); // no-warning
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if (!fd)
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close(fd);
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fd = open(path, O_CREAT); // expected-warning{{Call to 'open' requires a third argument when the 'O_CREAT' flag is set}}
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if (!fd)
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close(fd);
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}
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void test_dispatch_once() {
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dispatch_once_t pred = 0;
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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}}
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}
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void test_dispatch_once_neg() {
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static dispatch_once_t pred = 0;
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do { if (__builtin_expect(*(&pred), ~0l) != ~0l) dispatch_once((&pred), (^() {})); } while (0); // no-warning
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}
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void test_pthread_once_aux();
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void test_pthread_once() {
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pthread_once_t pred = {0x30B1BCBA, {0}};
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pthread_once(&pred, test_pthread_once_aux); // expected-warning{{Call to 'pthread_once' uses the local variable 'pred' for the "control" value}}
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}
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void test_pthread_once_neg() {
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static pthread_once_t pred = {0x30B1BCBA, {0}};
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pthread_once(&pred, test_pthread_once_aux); // no-warning
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}
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// PR 2899 - warn of zero-sized allocations to malloc().
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void pr2899() {
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char* foo = malloc(0); // expected-warning{{Call to 'malloc' has an allocation size of 0 bytes}}
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for (unsigned i = 0; i < 100; i++) {
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foo[i] = 0;
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}
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}
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void pr2899_nowarn(size_t size) {
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char* foo = malloc(size); // no-warning
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for (unsigned i = 0; i < 100; i++) {
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foo[i] = 0;
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}
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}
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