1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2 #include <pthread.h> 3 #include <stdio.h> 4 #include <stdlib.h> 5 #include <unistd.h> 6 #include <sys/types.h> 7 #include <sys/socket.h> 8 #include <netinet/in.h> 9 #include <arpa/inet.h> 10 11 struct sockaddr_in addr; 12 int X; 13 14 void *ClientThread(void *x) { 15 X = 42; 16 int c = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 17 if (connect(c, (struct sockaddr*)&addr, sizeof(addr))) { 18 perror("connect"); 19 exit(1); 20 } 21 if (send(c, "a", 1, 0) != 1) { 22 perror("send"); 23 exit(1); 24 } 25 close(c); 26 return NULL; 27 } 28 29 int main() { 30 int s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 31 addr.sin_family = AF_INET; 32 inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr); 33 addr.sin_port = INADDR_ANY; 34 socklen_t len = sizeof(addr); 35 bind(s, (sockaddr*)&addr, len); 36 getsockname(s, (sockaddr*)&addr, &len); 37 listen(s, 10); 38 pthread_t t; 39 pthread_create(&t, 0, ClientThread, 0); 40 int c = accept(s, 0, 0); 41 char buf; 42 while (read(c, &buf, 1) != 1) { 43 } 44 X = 43; 45 close(c); 46 close(s); 47 pthread_join(t, 0); 48 fprintf(stderr, "OK\n"); 49 } 50 51 // CHECK-NOT: WARNING: ThreadSanitizer: data race 52 53
