pkgs/development/libraries/boost/clang-math-2.patch

   1 From 6bb71fdd8f7cc346d90fb14beb38b7297fc1ffd9 Mon Sep 17 00:00:00 2001
   2 From: Andrey Semashev <andrey.semashev@gmail.com>
   3 Date: Sun, 26 Jan 2014 13:58:48 +0400
   4 Subject: [PATCH] Fixed incorrect initialization of 128-bit values, when no
   5  native support for 128-bit integers is available.
   6
   7 ---
   8  boost/atomic/detail/cas128strong.hpp | 10 +++++++---
   9  1 file changed, 7 insertions(+), 3 deletions(-)
  10
  11 diff --git a/boost/atomic/detail/cas128strong.hpp b/boost/atomic/detail/cas128strong.hpp
  12 index 906c13e..dcb4d7d 100644
  13 --- a/boost/atomic/detail/cas128strong.hpp
  14 +++ b/boost/atomic/detail/cas128strong.hpp
  15 @@ -196,15 +196,17 @@ class base_atomic<T, void, 16, Sign>
  16
  17  public:
  18      BOOST_DEFAULTED_FUNCTION(base_atomic(void), {})
  19 -    explicit base_atomic(value_type const& v) BOOST_NOEXCEPT : v_(0)
  20 +    explicit base_atomic(value_type const& v) BOOST_NOEXCEPT
  21      {
  22 +        memset(&v_, 0, sizeof(v_));
  23          memcpy(&v_, &v, sizeof(value_type));
  24      }
  25
  26      void
  27      store(value_type const& value, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
  28      {
  29 -        storage_type value_s = 0;
  30 +        storage_type value_s;
  31 +        memset(&value_s, 0, sizeof(value_s));
  32          memcpy(&value_s, &value, sizeof(value_type));
  33          platform_fence_before_store(order);
  34          platform_store128(value_s, &v_);
  35 @@ -247,7 +249,9 @@ class base_atomic<T, void, 16, Sign>
  36          memory_order success_order,
  37          memory_order failure_order) volatile BOOST_NOEXCEPT
  38      {
  39 -        storage_type expected_s = 0, desired_s = 0;
  40 +        storage_type expected_s, desired_s;
  41 +        memset(&expected_s, 0, sizeof(expected_s));
  42 +        memset(&desired_s, 0, sizeof(desired_s));
  43          memcpy(&expected_s, &expected, sizeof(value_type));
  44          memcpy(&desired_s, &desired, sizeof(value_type));
  45