Hi Jan,
Definatly not on sun4c (sparc32) and probably not on other sparc.
16bit values have to be 16bit aligned.
32bit values have to be 32bit aligned.
64bit values have to be 64bit aligned (e.g. double x).
Some versions of GCC may be capable of sorting out the correct code but my
experience is avoid the situation to start with by using code similar to
memcpy (&x, &un_aligned_x, sizeof x).
Regards
Mark Fortescue.
On Sat, 2 Jun 2007, Jan Engelhardt wrote:
Hi,
I was just wondering, since sparc is one of these alignment-sensitive
architectures, is it actually valid to dereference at odd positions,
e.g...?
*(uint16_t *)uint8_ptr[something_not_divisible_by_2];
*(uint32_t *)uint8_ptr[something_not_divisible_by_4];
etc.
Jan
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