+-- The module "Foreign.Marshal.Alloc" provides operations to allocate and
+-- deallocate blocks of raw memory (i.e., unstructured chunks of memory
+-- outside of the area maintained by the Haskell storage manager). These
+-- memory blocks are commonly used to pass compound data structures to
+-- foreign functions or to provide space in which compound result values
+-- are obtained from foreign functions.
+--
+-- If any of the allocation functions fails, a value of 'nullPtr' is
+-- produced. If 'free' or 'reallocBytes' is applied to a memory area
+-- that has been allocated with 'alloca' or 'allocaBytes', the
+-- behaviour is undefined. Any further access to memory areas allocated with
+-- 'alloca' or 'allocaBytes', after the computation that was passed to
+-- the allocation function has terminated, leads to undefined behaviour. Any
+-- further access to the memory area referenced by a pointer passed to
+-- 'realloc', 'reallocBytes', or 'free' entails undefined
+-- behaviour.
+--
+-- All storage allocated by functions that allocate based on a /size in bytes/
+-- must be sufficiently aligned for any of the basic foreign types
+-- that fits into the newly allocated storage. All storage allocated by
+-- functions that allocate based on a specific type must be sufficiently
+-- aligned for that type. Array allocation routines need to obey the same
+-- alignment constraints for each array element.