== vs =

[Barnacle Wes]

In article <226 at hotlr.ATT>, dkc at hotlr.ATT (Dave Cornutt) writes:
> [...]                               D is another matter; catching the
> accidental misapplication of "=" in "if" statements would be worth it.

The one thing that everyone seems to have forgotten in this discussion
is that `=' is NOT always invalid in and if clause:

volatile short *statreg = (short *) 0x00FFC000L;
...
    short status;
    ...
    if (status = *statreg) {
	do something with status;
    }

Code like this would (perhaps) be used for polling hardware status
registers.  Remember, C is supposed to be a general-purpose language!
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