Re: single bit flip detector.

From: Geert Uytterhoeven
Date: Sun Aug 06 2006 - 07:18:42 EST

On Wed, 2 Aug 2006, Jan Engelhardt wrote:
> > printk(" %02x", (unsigned char)data[offset + i]);
> Remove cast. (Or does it spew a warning message for you?)

No warning, but you still want the cast...

On PPC and ARM that will work fine, since char is unsigned.

But on most other platforms char is signed, and contrary to popular belief,
`%02x' doesn't mean `limit this field to 2 characters', so it would print e.g.
ffffffff instead of ff for -1.



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at