--- progs/infocmp.c
+++ progs/infocmp.c	2012-03-05 11:11:08.300796156 +0000
@@ -1089,9 +1089,10 @@ dump_initializers(TERMTYPE *term)
 
 	if (VALID_STRING(term->Strings[n])) {
 	    tp = buf;
+#define TP_LIMIT	((MAX_STRING - 4) - (size_t)(tp - buf))
 	    *tp++ = '"';
 	    for (sp = term->Strings[n];
-		 *sp != 0 && (tp - buf) < MAX_STRING - 6;
+		 *sp != 0 && TP_LIMIT > 2;
 		 sp++) {
 		if (isascii(UChar(*sp))
 		    && isprint(UChar(*sp))
@@ -1099,7 +1100,7 @@ dump_initializers(TERMTYPE *term)
 		    && *sp != '"')
 		    *tp++ = *sp;
 		else {
-		    _nc_SPRINTF(tp, _nc_SLIMIT(MAX_STRING) "\\%03o", UChar(*sp));
+		    _nc_SPRINTF(tp, _nc_SLIMIT(TP_LIMIT) "\\%03o", UChar(*sp));
 		    tp += 4;
 		}
 	    }