37 lines · 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>&14//5// UNSUPPORTED: android6 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 14int 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 37