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Fixed issue #65 pmr::monotonic_buffer_resource::allocate() can return a pointer to freed memory after release() is called.

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This commit is contained in:
Ion Gaztañaga
2018-01-27 21:23:43 +01:00
parent feeafbe9f3
commit 22f00f45d8
3 changed files with 22 additions and 10 deletions
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11
src/monotonic_buffer_resource.cpp
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@@ -60,14 +60,14 @@ void monotonic_buffer_resource::increase_next_buffer_at_least_to(std::size_t min
monotonic_buffer_resource::monotonic_buffer_resource(memory_resource* upstream) BOOST_NOEXCEPT
: m_memory_blocks(upstream ? *upstream : *get_default_resource())
, m_current_buffer(0u)
, m_current_buffer(0)
, m_current_buffer_size(0u)
, m_next_buffer_size(initial_next_buffer_size)
{}
monotonic_buffer_resource::monotonic_buffer_resource(std::size_t initial_size, memory_resource* upstream) BOOST_NOEXCEPT
: m_memory_blocks(upstream ? *upstream : *get_default_resource())
, m_current_buffer(0u)
, m_current_buffer(0)
, m_current_buffer_size(0u)
, m_next_buffer_size(minimum_buffer_size)
{ //In case initial_size is zero
@@ -87,7 +87,12 @@ monotonic_buffer_resource::~monotonic_buffer_resource()
{ this->release(); }
void monotonic_buffer_resource::release() BOOST_NOEXCEPT
{ m_memory_blocks.release(); }
{
m_memory_blocks.release();
m_current_buffer = 0u;
m_current_buffer_size = 0u;
m_next_buffer_size = initial_next_buffer_size;
}
memory_resource* monotonic_buffer_resource::upstream_resource() const BOOST_NOEXCEPT
{ return &m_memory_blocks.upstream_resource(); }