Only in b: 1
diff -ubBr a/afio.c b/afio.c
--- a/afio.c	2018-03-23 09:16:07.230401966 -0400
+++ b/afio.c	2018-03-23 09:20:05.614421756 -0400
@@ -3724,7 +3724,8 @@
 	
 	/* ASX check if file changed between the begining 
 	   and end of the backup */
-	if (*fsname)
+        /* if *fsname==0, it was a control file, so do not check then */
+	if (*fsname!=0)
 	{
 	    struct stat st;
 	    /* I must check fsname ! 
@@ -3739,13 +3740,10 @@
 	        if (st.st_mtime!=sb.sb_mtime)
 	        {
 	            warn (fsname, "File was modified during its backup");
+		    if(index(ignorewarnings,(int)'d')) warnings--;
 	        }
 	    }
 	}
-	else
-	{
-	    warn (name, "ASX no fsname for this name ??");
-        }
 	
 	if(aflag && *fsname && ((sb.sb_mode & S_IFMT)==S_IFREG))
 	{