# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1587947628 -10800
# Node ID ec6a3790a91b312495a32e672fbbf68d211175b1
# Parent  3ea040bb0dcab6ab5bb76949b23a2991122c8c65
Do not use th_strlen() in th_strndup(), as the string might not have a
terminating NUL before the n'th character.

diff -r 3ea040bb0dca -r ec6a3790a91b th_string.c
--- a/th_string.c	Mon Apr 27 01:35:39 2020 +0300
+++ b/th_string.c	Mon Apr 27 03:33:48 2020 +0300
@@ -87,9 +87,7 @@
     if (src == NULL)
         return NULL;
 
-    len = th_strlen(src);
-    if (len > n)
-        len = n;
+    for (len = 0; len < n && src[len]; len++);
 
     if ((res = th_malloc((len + 1) * sizeof(th_char_t))) == NULL)
         return NULL;