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> Does Lua ever realloc() or malloc() 0 bytes?


> What are the expected semantics of:
> 1. realloc() an existing block to a size of 0 bytes?

Free the block. (Assuming 'realloc' is Lua allocation function.)

> When nsize is zero, the allocator must return NULL; if osize is not
> zero, it should free the block pointed to by ptr.

> 2. realloc() a new block to a size of 0 bytes?

no op (unlike C realloc).

-- Roberto