From 24a7e51745615a49dff766fce894c23a742df6a0 Mon Sep 17 00:00:00 2001
From: "Peter W. Draper" <p.w.draper@durham.ac.uk>
Date: Mon, 3 Jun 2019 15:08:55 +0100
Subject: [PATCH] Only copy the buffer size, memuse_log_count can exceed this,
also make the log pointer volatile to stop potential reordering
---
src/memuse.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/memuse.c b/src/memuse.c
index 10fd349c0c..9b29b37755 100644
--- a/src/memuse.c
+++ b/src/memuse.c
@@ -73,7 +73,7 @@ struct memuse_log_entry {
};
/* The log of allocations and frees. */
-static struct memuse_log_entry *memuse_log = NULL;
+static struct memuse_log_entry *volatile memuse_log = NULL;
static volatile size_t memuse_log_size = 0;
static volatile size_t memuse_log_count = 0;
static volatile size_t memuse_log_done = 0;
@@ -103,7 +103,7 @@ static void memuse_log_reallocate(size_t ind) {
/* Copy to new buffer. */
memcpy(new_log, memuse_log,
- sizeof(struct memuse_log_entry) * memuse_log_count);
+ sizeof(struct memuse_log_entry) * memuse_log_size);
free(memuse_log);
memuse_log = new_log;
--
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