> 
> 
>  Hello all.
> 
>  If this problem has already known, I am sorry.
> 
>  I am investigating the problem that calloc returns no
>  cleared area.
>  It was made on IA32 system and executes on IA64.
>  I think calloc expects to clear the memories sbrk
>  returned. But When the program made on IA32 is
>  executing on IA64 system, sbrk sometimes returns no
>  cleared area. 
>  Because the Kernel on IA64 alignes the memories 16K
>  bytes. However, when the progmam made on IA32 is
>  executing on IA64, the function __getpagesize returns
>  4Kbytes. At this case, if the memories that calloc
>  requests to return sbrk(-xxx) is smaller than
>  16Kbytes, the kernel do not unmap this memory.
>  (I think that the time that the memories clears 0 by
>  the kernel is when the kernel maps memories by the signal) 
> 
>  How do you think?
> 
> --
> Regards, 
> Hideki Yamamoto   (V).v.(V) # Empowered by Innovation
>