diff -r 08018864fb91 -r 9d3dea320d8e ucx/string.c
--- a/ucx/string.c	Thu Feb 28 08:50:24 2013 +0100
+++ b/ucx/string.c	Fri Jun 21 10:27:03 2013 +0200
@@ -95,7 +95,7 @@
 
 sstr_t sstrsubsl(sstr_t s, size_t start, size_t length) {
     sstr_t new_sstr;
-    if (start < 0 || start >= s.length || length < 0) {
+    if (start >= s.length) {
         return s;
     }
     if (length > s.length-start) {
@@ -197,11 +197,21 @@
     newstr.ptr = &string.ptr[i];
     newstr.length = string.length - i;
     
-    for(i=newstr.length-1;i>=0;i--) {
+    if(newstr.length == 0) {
+        return newstr;
+    }
+    
+    i = newstr.length - 1;
+    for(;;) {
         char c = newstr.ptr[i];
         if(c > 32) {
             break;
         }
+        if(i > 0) {
+            i--;
+        } else {
+            break;
+        }
     }
     newstr.length = i + 1;