[PATCH 1/2] * console-client/xkb/kstoucs.c (find_ucs): assert precondition.

[Diego Nieto Cid]

---
 console-client/xkb/kstoucs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/console-client/xkb/kstoucs.c b/console-client/xkb/kstoucs.c
index 8471e94..fb62445 100644
--- a/console-client/xkb/kstoucs.c
+++ b/console-client/xkb/kstoucs.c
@@ -1,3 +1,5 @@
+#include <assert.h>
+
 struct ksmap {
   int keysym;
   unsigned int ucs;
@@ -11,6 +13,8 @@ find_ucs (int keysym, struct ksmap *first, struct ksmap *last)
 {
   struct ksmap *middle = first + (last - first) / 2;
 
+  assert (first <= last);
+
   if (middle->keysym == keysym)
     return middle->ucs; /* base case: needle found. */
   else if (first == last               /* empty search space */
-- 
2.1.4