compiler-rt/test/asan/TestCases/Posix/readv.cpp

   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("/etc/hosts", O_RDONLY);
  27   assert(fd > 0);
  28   readv(fd, iov, 2);
  29   // CHECK: WRITE of size 5 at
  30   close(fd);
  31   return 0;
  32 }