std::pmr::memory_resource::deallocate
Min standard notice:
Deallocates the storage pointed to by p. p shall have been returned by a prior call to allocate(bytes, alignment) on a memory_resource that compares equal to *this, and the storage it points to shall not yet have been deallocated.
# Declarations
void deallocate( void* p,
std::size_t bytes,
std::size_t alignment = alignof(std::max_align_t) );
(since C++17)