From: Timo Sirainen <tss@iki.fi>
Date: Mon, 5 Jul 2004 15:01:52 +0000 (+0300)
Subject: pool_alloconly_free() can free the last allocation.
X-Git-Tag: 1.1.alpha1~3820
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d3366e96ea7dbee2af95357c36b7844ebb62d934;p=thirdparty%2Fdovecot%2Fcore.git

pool_alloconly_free() can free the last allocation.

--HG--
branch : HEAD
---

diff --git a/src/lib/mempool-alloconly.c b/src/lib/mempool-alloconly.c
index 761488c329..a7d23be981 100644
--- a/src/lib/mempool-alloconly.c
+++ b/src/lib/mempool-alloconly.c
@@ -186,10 +186,17 @@ static void *pool_alloconly_malloc(pool_t pool, size_t size)
 	return mem;
 }
 
-static void pool_alloconly_free(pool_t pool __attr_unused__,
-				void *mem __attr_unused__)
+static void pool_alloconly_free(pool_t pool, void *mem)
 {
-	/* ignore */
+	struct alloconly_pool *apool = (struct alloconly_pool *) pool;
+
+	/* we can free only the last allocation */
+	if (POOL_BLOCK_DATA(apool->block) +
+	    (apool->block->size - apool->block->left -
+	     apool->block->last_alloc_size) == mem) {
+		apool->block->left += apool->block->last_alloc_size;
+                apool->block->last_alloc_size = 0;
+	}
 }
 
 static int pool_try_grow(struct alloconly_pool *apool, void *mem, size_t size)