[hurd] 06/15: console-client: assert precondition

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit ffea85471c65fd7758e159207ae7f7a089106644
Author: Diego Nieto Cid <address@hidden>
Date:   Thu Jun 4 22:58:09 2015 -0300

    console-client: assert precondition
    
    * console-client/xkb/kstoucs.c (find_ucs): assert precondition.
---
 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 */

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