Fix an edge case with strlcat().

2011-04-11 21:28:03 +02:00 · 2011-04-11 21:28:03 +02:00 · 079549cbd2
parent 0f0a4d0a5e
commit 079549cbd2
1 changed files with 6 additions and 1 deletions
--- a/strl.c
+++ b/strl.c
@ -41,7 +41,12 @@ size_t strlcat(char *dest, const char *source, size_t size)
 {
   size_t len = strlen(dest);
   dest += len;
-   size -= len;
+
+   if (len > size)
+      size = 0;
+   else
+      size -= len;
+
   return len + strlcpy(dest, source, size);
 }
 #endif