std::pmr::memory_resource::allocate
< cpp | memory | memory resource
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void* allocate( std::size_t bytes,
std::size_t alignment = alignof(std::max_align_t) ); |
(since C++17) (until C++20) |
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[[nodiscard]] void* allocate( std::size_t bytes,
std::size_t alignment = alignof(std::max_align_t) ); |
(since C++20) | |
Allocates storage with a size of at least bytes bytes, aligned to the specified alignment.
Equivalent to return do_allocate(bytes, alignment);.
Exceptions
Throws an exception if storage of the requested size and alignment cannot be obtained.
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 2843 | ??? | over-alignment was allowed to be unsupported | alignment must be honoured |
See also
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[virtual]
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allocates memory (virtual private member function) |