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> > I'm surprised that a simple test with very little used memory,
> > Lua is already calling realloc!
> Why ( are you surprised ) ? ( It may be, and given what I have read in
> the manual I suspect is) using realloc for all memory allocations.
> AAMOF a quick grep in the sources show no malloc usages and just a
> single realloc and free ones ( you can do everything with realloc ).

Indeed, Lua uses realloc for all its allocations. According to ISO C99: The realloc function

  #include <stdlib.h>
  void *realloc(void *ptr, size_t size);

  If ptr is a null pointer, the realloc function behaves like the malloc
  function for the specified size.

-- Roberto