> True.  But we could avoid breaking such programs with something like:
> 
> 	extern FILE __sFstdin[], __sFstdout[], __sFstderr[];
> 
> 	#define stdin __sFstdin[0]
> 	#define stdout __sFstdout[0]
> 	#define stderr __sFstderr[0]

Oh, I see.
Perhaps the following is less tricky, BTW.

	typedef struct __SFILE FILE;

	extern FILE __sFstdin, __sFstdout, __sFstderr;

	#define stdin &__sFstdin
	#define stdout &__sFstdout
	#define stderr &__sFstderr

--
soda