fix expanding buffer, memory allocation now accounts for 0 (default 16)

CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.20)
 include(cmake/color.cmake)
 
-set(BLT_VERSION 0.17.18)
+set(BLT_VERSION 0.17.19)
 set(BLT_TEST_VERSION 0.0.1)
 
 set(BLT_TARGET BLT)

include/blt/std/memory.h

@@ -269,7 +269,7 @@ namespace blt
             using const_reverse_iterator = std::reverse_iterator<const_iterator>;
         private:
             T* buffer_ = nullptr;
-            size_t size_;
+            size_t size_ = 0;
         public:
             constexpr expanding_buffer(): buffer_(nullptr), size_(0)
             {}
@@ -465,23 +465,25 @@ namespace blt
         private:
             void expand(blt::size_t size)
             {
-                size = std::max(this->size(), size);
+                size = std::max(size_, size);
-                T* new_buffer = new T[blt::mem::next_byte_allocation(size)];
+                size = blt::mem::next_byte_allocation(size);
+                T* new_buffer = new T[size];
                 if constexpr (std::is_trivially_copyable_v<T>)
                 {
-                    std::memcpy(new_buffer, buffer_, size * sizeof(T));
+                    std::memcpy(new_buffer, buffer_, size_ * sizeof(T));
                 } else
                 {
                     if constexpr (std::is_copy_constructible_v<T> && !std::is_move_constructible_v<T>)
                     {
-                        for (size_t i = 0; i < size; i++)
+                        for (size_t i = 0; i < size_; i++)
                             new_buffer[i] = T(buffer_[i]);
                     } else
-                        for (size_t i = 0; i < size; i++)
+                        for (size_t i = 0; i < size_; i++)
                             new_buffer[i] = std::move(buffer_[i]);
                 }
                 delete[] buffer_;
                 buffer_ = new_buffer;
+                size_ = size;
             }
             
             inline void delete_this(T* buffer, blt::size_t)

include/blt/std/memory_util.h

@@ -113,8 +113,10 @@ namespace blt::mem
         return fromBytes(in, *out);
     }
     
-    inline static size_t next_byte_allocation(size_t prev_size, size_t default_allocation_block = 8192)
+    inline static size_t next_byte_allocation(size_t prev_size, size_t default_allocation_block = 8192, size_t default_size = 16)
     {
+        if (prev_size < default_size)
+            return default_size;
         if (prev_size < default_allocation_block)
             return prev_size * 2;
         return prev_size + default_allocation_block;