🚀 go-pugleaf

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#include	......

unsigned char	*buff;

#define		MAXBUFF 128
#define         LDSHORT(addr)   (ntohs (*( (unsigned short *) (addr) )))
#define         STSHORT(sval, addr) (*( (unsigned short *)(addr)) = htons(sval))

void main(void)
{
	unsigned short i;

	buff = (unsigned char *) calloc(MAXBUFF, sizeof(unsigned char));


	STSHORT(10, buff + 1); 
	i = LDSHORT(buff + 1);
	printf("%d\n", i);
}

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Executing the above program gave three different results on three different
processors and operating systems;

	- On a SUN SPARCclasic (Solaris 2.4) the result was a Bus error.
	- On a DECStation 5500 (ULTRIX 4.4) program run and printed 10 but with a
	  message "Fixed up unaligned data access for pid 25977 (a.out) at pc 0x400678".
	- On a RISC/6000 (AIX ??) program run without an error or warning.

	
Do you have any idea about why this little code produce such different results on
different processors?




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