From 53b0d0aca9d87361f6add5c1ff8380b8101ffceb Mon Sep 17 00:00:00 2001
From: Paul LeoNerd Evans <leonerd@leonerd.org.uk>
Date: Sun, 10 Feb 2008 20:24:25 +0000
Subject: More robust eatbytes() that guards against the buffer going negative,
 because size_t is not signed

---
 termkey.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/termkey.c b/termkey.c
index 819b49f..644629f 100644
--- a/termkey.c
+++ b/termkey.c
@@ -188,14 +188,15 @@ int termkey_getwaittime(termkey_t *tk)
 
 static inline void eatbytes(termkey_t *tk, size_t count)
 {
-  tk->buffstart += count;
-  tk->buffcount -= count;
-
-  if(tk->buffcount <= 0) {
+  if(count >= tk->buffcount) {
     tk->buffstart = 0;
     tk->buffcount = 0;
+    return;
   }
 
+  tk->buffstart += count;
+  tk->buffcount -= count;
+
   size_t halfsize = tk->buffsize / 2;
 
   if(tk->buffstart > halfsize) {
-- 
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