# 1.28.0[−][src]Module core::alloc

Memory allocation APIs

## Structs

Layout | Layout of a block of memory.
LayoutErr | The parameters given to `Layout::from_size_align` or some other `Layout` constructor do not satisfy its documented constraints.
AllocErr | Experimental The `AllocErr` error indicates an allocation failure that may be due to resource exhaustion or to something wrong when combining the given input arguments with this allocator.

## Traits

GlobalAlloc | A memory allocator that can be registered as the standard library’s default through the `#[global_allocator]` attribute.
AllocRef | Experimental An implementation of `AllocRef` can allocate, grow, shrink, and deallocate arbitrary blocks of data described via `Layout`.