# HG changeset patch
# User Bram Moolenaar <bram@vim.org>
# Date 1329930752 -3600
# Node ID 1632640a24b42a9193eeb8f6e8150afaeee5ee35
# Parent  3b20f136436562d95495971ca4e663f9623c2fb5
updated for version 7.3.454
Problem:    Re-allocating memory slows Vim down.
Solution:   Use realloc() in ga_grow(). (Dominique Pelle)

diff --git a/src/misc2.c b/src/misc2.c
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -2064,24 +2064,22 @@ ga_grow(gap, n)
     garray_T	*gap;
     int		n;
 {
-    size_t	len;
+    size_t	old_len;
+    size_t	new_len;
     char_u	*pp;
 
     if (gap->ga_maxlen - gap->ga_len < n)
     {
 	if (n < gap->ga_growsize)
 	    n = gap->ga_growsize;
-	len = gap->ga_itemsize * (gap->ga_len + n);
-	pp = alloc_clear((unsigned)len);
+	new_len = gap->ga_itemsize * (gap->ga_len + n);
+	pp = (gap->ga_data == NULL)
+			? alloc(new_len) : vim_realloc(gap->ga_data, new_len);
 	if (pp == NULL)
 	    return FAIL;
+	old_len = gap->ga_itemsize * gap->ga_maxlen;
+	vim_memset(pp + old_len, 0, new_len - old_len);
 	gap->ga_maxlen = gap->ga_len + n;
-	if (gap->ga_data != NULL)
-	{
-	    mch_memmove(pp, gap->ga_data,
-				      (size_t)(gap->ga_itemsize * gap->ga_len));
-	    vim_free(gap->ga_data);
-	}
 	gap->ga_data = pp;
     }
     return OK;
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    454,
+/**/
     453,
 /**/
     452,