| 1 | // RUN: %clangxx_asan -O0 %s -o %t && %run %t |
|---|---|
| 2 | // RUN: %clangxx_asan -O0 %s -DPOSITIVE -o %t && not %run %t 2>&1 | FileCheck %s |
| 3 | |
| 4 | // Test the readv() interceptor. |
| 5 | |
| 6 | #include <assert.h> |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | #include <unistd.h> |
| 10 | #include <fcntl.h> |
| 11 | #include <sys/uio.h> |
| 12 | #include <time.h> |
| 13 | |
| 14 | int main() { |
| 15 | char buf[2011]; |
| 16 | struct iovec iov[2]; |
| 17 | #ifdef POSITIVE |
| 18 | char * volatile buf_ = buf; |
| 19 | iov[0].iov_base = buf_ - 1; |
| 20 | #else |
| 21 | iov[0].iov_base = buf + 1; |
| 22 | #endif |
| 23 | iov[0].iov_len = 5; |
| 24 | iov[1].iov_base = buf + 10; |
| 25 | iov[1].iov_len = 2000; |
| 26 | int fd = open(file: "/etc/hosts", O_RDONLY); |
| 27 | assert(fd > 0); |
| 28 | readv(fd: fd, iovec: iov, count: 2); |
| 29 | // CHECK: WRITE of size 5 at |
| 30 | close(fd: fd); |
| 31 | return 0; |
| 32 | } |
| 33 |