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

   1 // Test that ASan doesn't raise false alarm when MSG_TRUNC is present.
   2 //
   3 // RUN: %clangxx %s -o %t && %run %t 2>&1
   4 //
   5 // UNSUPPORTED: android
   6
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <sys/types.h>
  10 #include <sys/socket.h>
  11 #include <netinet/ip.h>
  12 #include <assert.h>
  13
  14 int main() {
  15   int fd_0 = socket(AF_INET, SOCK_DGRAM, 0);
  16   int fd_1 = socket(AF_INET, SOCK_DGRAM, 0);
  17   struct sockaddr_in sin;
  18   socklen_t len = sizeof(sin);
  19   char *buf = (char *)malloc(1);
  20
  21   sin.sin_family = AF_INET;
  22   // Choose a random port to bind.
  23   sin.sin_port = 0;
  24   sin.sin_addr.s_addr = INADDR_ANY;
  25
  26   assert(bind(fd_1, (struct sockaddr *)&sin, sizeof(sin)) == 0);
  27   // Get the address and port binded.
  28   assert(getsockname(fd_1, (struct sockaddr *)&sin, &len) == 0);
  29   assert(sendto(fd_0, "hello", strlen("hello"), MSG_DONTWAIT,
  30                 (struct sockaddr *)&sin, sizeof(sin)) != -1);
  31   assert(recv(fd_1, buf, 1, MSG_TRUNC) != -1);
  32   free(buf);
  33
  34   return 0;
  35 }
  36