Method grow

extlibs/fmt/include/fmt/format.h:700–717

template <typename T, std::size_t SIZE, typename Allocator>
void basic_memory_buffer<T, SIZE, Allocator>::grow(std::size_t size) {
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
  if (size > 1000) throw std::runtime_error("fuzz mode - won't grow that much");
#endif
  std::size_t old_capacity = this->capacity();
  std::size_t new_capacity = old_capacity + old_capacity / 2;
  if (size > new_capacity) new_capacity = size;
  T* old_data = this->data();
  T* new_data = std::allocator_traits<Allocator>::allocate(*this, new_capacity);
  // The following code doesn't throw, so the raw pointer above doesn't leak.
  std::uninitialized_copy(old_data, old_data + this->size(),
                          internal::make_checked(new_data, new_capacity));
  this->set(new_data, new_capacity);
  // deallocate must not throw according to the standard, but even if it does,
  // the buffer already uses the new storage and will deallocate it in
  // destructor.
  if (old_data != store_) Allocator::deallocate(old_data, old_capacity);
}

using memory_buffer = basic_memory_buffer<char>;
using wmemory_buffer = basic_memory_buffer<wchar_t>;