mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-22 13:43:22 +00:00
46 lines
1.8 KiB
Diff
46 lines
1.8 KiB
Diff
From 6bb71fdd8f7cc346d90fb14beb38b7297fc1ffd9 Mon Sep 17 00:00:00 2001
|
|
From: Andrey Semashev <andrey.semashev@gmail.com>
|
|
Date: Sun, 26 Jan 2014 13:58:48 +0400
|
|
Subject: [PATCH] Fixed incorrect initialization of 128-bit values, when no
|
|
native support for 128-bit integers is available.
|
|
|
|
---
|
|
boost/atomic/detail/cas128strong.hpp | 10 +++++++---
|
|
1 file changed, 7 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/boost/atomic/detail/cas128strong.hpp b/boost/atomic/detail/cas128strong.hpp
|
|
index 906c13e..dcb4d7d 100644
|
|
--- a/boost/atomic/detail/cas128strong.hpp
|
|
+++ b/boost/atomic/detail/cas128strong.hpp
|
|
@@ -196,15 +196,17 @@ class base_atomic<T, void, 16, Sign>
|
|
|
|
public:
|
|
BOOST_DEFAULTED_FUNCTION(base_atomic(void), {})
|
|
- explicit base_atomic(value_type const& v) BOOST_NOEXCEPT : v_(0)
|
|
+ explicit base_atomic(value_type const& v) BOOST_NOEXCEPT
|
|
{
|
|
+ memset(&v_, 0, sizeof(v_));
|
|
memcpy(&v_, &v, sizeof(value_type));
|
|
}
|
|
|
|
void
|
|
store(value_type const& value, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
|
|
{
|
|
- storage_type value_s = 0;
|
|
+ storage_type value_s;
|
|
+ memset(&value_s, 0, sizeof(value_s));
|
|
memcpy(&value_s, &value, sizeof(value_type));
|
|
platform_fence_before_store(order);
|
|
platform_store128(value_s, &v_);
|
|
@@ -247,7 +249,9 @@ class base_atomic<T, void, 16, Sign>
|
|
memory_order success_order,
|
|
memory_order failure_order) volatile BOOST_NOEXCEPT
|
|
{
|
|
- storage_type expected_s = 0, desired_s = 0;
|
|
+ storage_type expected_s, desired_s;
|
|
+ memset(&expected_s, 0, sizeof(expected_s));
|
|
+ memset(&desired_s, 0, sizeof(desired_s));
|
|
memcpy(&expected_s, &expected, sizeof(value_type));
|
|
memcpy(&desired_s, &desired, sizeof(value_type));
|
|
|