kc3-lang/libevent/sample/signal-test.c

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• Hash : a0276292
  Author :
  Date : 2019-08-21T01:00:07
  

  sample/signal-test: fix use of uninitialized variable
  
  signal_int is uninitialized in the !base error path.
  
  Signed-off-by: David Disseldorp <ddiss@samba.org>
  

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• sample/signal-test.c

• /*
   * Compile with:
   * cc -I/usr/local/include -o signal-test \
   *   signal-test.c -L/usr/local/lib -levent
   */
  
  #include <sys/types.h>
  
  #include <event2/event-config.h>
  
  #include <sys/stat.h>
  #ifndef _WIN32
  #include <sys/queue.h>
  #include <unistd.h>
  #include <sys/time.h>
  #else
  #include <winsock2.h>
  #include <windows.h>
  #endif
  #include <signal.h>
  #include <fcntl.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <errno.h>
  
  #include <event2/event.h>
  
  int called = 0;
  
  static void
  signal_cb(evutil_socket_t fd, short event, void *arg)
  {
  	struct event *signal = arg;
  
  	printf("signal_cb: got signal %d\n", event_get_signal(signal));
  
  	if (called >= 2)
  		event_del(signal);
  
  	called++;
  }
  
  int
  main(int argc, char **argv)
  {
  	struct event *signal_int = NULL;
  	struct event_base* base;
  	int ret = 0;
  #ifdef _WIN32
  	WORD wVersionRequested;
  	WSADATA wsaData;
  
  	wVersionRequested = MAKEWORD(2, 2);
  
  	(void) WSAStartup(wVersionRequested, &wsaData);
  #endif
  
  	/* Initialize the event library */
  	base = event_base_new();
  	if (!base) {
  		ret = 1;
  		goto out;
  	}
  
  	/* Initialize one event */
  	signal_int = evsignal_new(base, SIGINT, signal_cb, event_self_cbarg());
  	if (!signal_int) {
  		ret = 2;
  		goto out;
  	}
  	event_add(signal_int, NULL);
  
  	event_base_dispatch(base);
  
  out:
  	if (signal_int)
  		event_free(signal_int);
  	if (base)
  		event_base_free(base);
  	return ret;
  }
  
  

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