Lots of bool operations shouldn't compile

[Don Clugston]

Oskar Linde wrote:

> (But note that the current D bool is (sans bugs) semantically identical 
> (as far as I can tell) to C99 and C++ bool, who both allows b+=5, et.al.)

I just tried that in MSVC, and you're right. I didn't know that. It's 
probably a legacy of the pre-bool days when ints or BOOL were used. In 
practice, I doubt it's really much of a problem. But there doesn't seem 
to be any rational reason to allow them.

BTW, MSVC accepts
bool b = true;
b /= false;  // crashes at run time with a div by zero error
but gives a warning for
bool b = true/false; // Can this be constant folded? What the heck does 
it set it to?

Also accepts b/=6.5;
Wonder what b/=real.nan does.