Hi,
this looks like a typo in gcc.
Jan
Index: gnu/gcc/gcc/config/mt/mt.c
===================================================================
RCS file: /cvs/src/gnu/gcc/gcc/config/mt/mt.c,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 mt.c
--- gnu/gcc/gcc/config/mt/mt.c 15 Oct 2009 17:11:30 -0000 1.1.1.1
+++ gnu/gcc/gcc/config/mt/mt.c 12 Jan 2016 20:07:28 -0000
@@ -475,7 +475,7 @@ mt_print_operand (FILE * file, rtx x, in
break;
default:
- fprintf(file, "Uknown code: %d", GET_CODE (x));
+ fprintf(file, "Unknown code: %d", GET_CODE (x));
break;
}