From Bill Parker:

code fails to check/test return value from select() 
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7861

svn path=/trunk/; revision=45917

1 files changed, 4 insertions, 0 deletions

diff --git a/capture_sync.c b/capture_sync.c
index 2d071e7814..a1d0aa29bd 100644
--- a/capture_sync.c
+++ b/capture_sync.c
@@ -1575,6 +1575,10 @@ pipe_read_block(int pipe_fd, char *indicator, int len, char *msg,
         /* we have a problem here, try to read some more bytes from the pipe to debug where the problem really is */
         memcpy(msg, header, sizeof(header));
         newly = read(pipe_fd, &msg[sizeof(header)], len-sizeof(header));
+	if (newly < 0) { /* error */
+	    g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_DEBUG,
+		  "read from pipe %d: error(%u): %s", pipe_fd, errno, g_strerror(errno));
+	}
         *err_msg = g_strdup_printf("Unknown message from dumpcap, try to show it as a string: %s",
                                    msg);
         return -1;