add tests

Author: devnexen

compiler-rt/test/sanitizer_common/TestCases/Linux/preadv2.cpp

@@ -0,0 +1,32 @@
+// RUN: %clangxx -O0 %s -o %t && %run %t
+// RUN: %env_tool_opts=handle_segv=2 not %run %t 3 2>&1 | FileCheck --check-prefixes=CHECK1,CHECK
+
+// UNSUPPORTED: android
+
+#include <assert.h>
+#include <fcntl.h>
+#include <sys/uio.h>
+#include <unistd.h>
+
+// CHECK: [[SAN:.*Sanitizer]]:DEADLYSIGNAL
+// CHECK: ERROR: [[SAN]]: SEGV on unknown address {{0x[^ ]*}} (pc
+int main(void) {
+  int fd = open("/proc/self/stat", O_RDONLY);
+  char bufa[7];
+  char bufb[7];
+  struct iovec vec[2];
+  vec[0].iov_base = bufa + 4;
+  vec[0].iov_len = 1;
+  vec[1].iov_base = bufb;
+  vec[1].iov_len = sizeof(bufb);
+  ssize_t rd = preadv2(fd, vec, 2, 0, 0);
+  assert(rd > 0);
+  vec[0].iov_base = bufa;
+  rd = preadv2(fd, vec, 2, 0, 0);
+  assert(rd > 0);
+  vec[1].iov_len = 1024;
+  preadv2(fd, vec, 2, 0, 0);
+  // CHECK1: #{{[0-9]+ .*}}main {{.*}}preadv2.cpp:[[@LINE-1]]:[[TAB:[0-9]+]]
+  // CHECK1: SUMMARY: [[SAN]]: SEGV {{.*}}preadv2.cpp:[[@LINE-2]]:[[TAB]] in main
+  return 0;
+}