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fix: crash on writing float44 type due to misaligned memory

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* the compiler in release builds optimizes to use movaps
* this opcode requires memory alignment to 16 byte
* the written memory buffer may be misaligned at this position
This commit is contained in:
Jan Laupetin
2026-01-17 00:15:59 +00:00
parent f95745fb87
commit 7c52fde1f8
1 changed files with 13 additions and 1 deletions
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14
src/ZoneWriting/Zone/Stream/ZoneOutputStream.h
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@@ -34,7 +34,9 @@ public:
[[nodiscard]] ZoneStreamFillWriteAccessor AtOffset(size_t offset) const;
[[nodiscard]] ZoneOutputOffset Offset() const;
template<typename T> void Fill(const T& value, const size_t offset) const
template<typename T>
requires(sizeof(T) <= sizeof(uintptr_t))
void Fill(const T& value, const size_t offset) const
{
assert(m_block_buffer);
assert(offset + sizeof(T) <= m_buffer_size);
@@ -42,6 +44,16 @@ public:
*reinterpret_cast<T*>(static_cast<char*>(m_block_buffer) + offset) = value;
}
template<typename T>
requires(sizeof(T) > sizeof(uintptr_t))
void Fill(const T& value, const size_t offset) const
{
assert(m_block_buffer);
assert(offset + sizeof(T) <= m_buffer_size);
std::memcpy(static_cast<char*>(m_block_buffer) + offset, &value, sizeof(T));
}
template<typename T, size_t S> void FillArray(T (&value)[S], const size_t offset) const
{
assert(m_block_buffer);