From: Wayne Davison <wayned@samba.org>
Date: Wed, 6 Jun 2007 15:38:31 +0000 (+0000)
Subject: Allow a NULL address to be passed to pool_free_old() to indicate that
X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/commitdiff_plain/c04af6970114f2209fce571d35ad2b1511119dc8

Allow a NULL address to be passed to pool_free_old() to indicate that
it should free all old mem and reset to an empty state.
---

diff --git a/lib/pool_alloc.c b/lib/pool_alloc.c
index 7d95f197..05b182c2 100644
--- a/lib/pool_alloc.c
+++ b/lib/pool_alloc.c
@@ -226,9 +226,15 @@ pool_free_old(alloc_pool_t p, void *addr)
 	struct alloc_pool *pool = (struct alloc_pool *)p;
 	struct pool_extent *cur, *prev, *next;
 
-	if (!pool || !addr)
+	if (!pool)
 		return;
 
+	if (!addr) {
+		if (!pool->extents)
+			return;
+		addr = PTR_ADD(pool->extents->start, pool->extents->free);
+	}
+
 	for (prev = NULL, cur = pool->extents; cur; prev = cur, cur = cur->next) {
 		if (addr >= cur->start
 		    && addr < PTR_ADD(cur->start, pool->size))