fixed a rare SEGV that can happen when a file disappears (due to

another program) during an update

diff --git a/receiver.c b/receiver.c
index 6647c68..bf0877b 100644 (file)
--- a/receiver.c
+++ b/receiver.c
@@ -254,10 +254,12 @@ static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
                        rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
                                i,len,(double)offset2,(double)offset);
                
-               map = map_ptr(buf,offset2,len);
+               if (buf) {
+                       map = map_ptr(buf,offset2,len);
                
-               see_token(map, len);
-               sum_update(map,len);
+                       see_token(map, len);
+                       sum_update(map,len);
+               }
                
                if (fd != -1 && write_file(fd,map,len) != len) {
                        rprintf(FERROR,"write failed on %s : %s\n",