diff -up tcsh-6.15.00/tc.str.c_old tcsh-6.15.00/tc.str.c
--- tcsh-6.15.00/tc.str.c_old	2008-09-03 13:08:44.000000000 +0200
+++ tcsh-6.15.00/tc.str.c	2008-09-03 13:11:32.000000000 +0200
@@ -154,7 +154,7 @@ short2str(const Char *src)
 {
     static char *sdst = NULL;
     static size_t dstsize = 0;
-    char *dst, *edst;
+    char *dst, *edst, *wdst, *wedst;
 
     if (src == NULL)
 	return (NULL);
@@ -171,8 +171,15 @@ short2str(const Char *src)
 	if (dst >= edst) {
 	    dstsize += MALLOC_INCR;
 	    sdst = xrealloc(sdst, (dstsize + MALLOC_SURPLUS) * sizeof(char));
+	    wdst = dst;
+	    wedst = edst;
 	    edst = &sdst[dstsize];
 	    dst = &edst[-MALLOC_INCR];
+	    while (wdst > wedst) {
+	        dst++;
+	        wdst--;
+	    }
+
 	}
     }
     *dst = 0;