Why catch an exception as reference-to-const?

Question

I\'ve heard and read many times that it is better to catch an exception as reference-to-const rather than as reference. Why is:

try {
    // stuff
} catch (c         


        

Answer 1

are you going to modify the exception? if not, it may as well be const. same reason you SHOULD use const anywhere else (I say SHOULD because it doesn't really make that much difference on the surface, might help compilers, and also help coders use your code properly and not do stuff they shouldn't)

exception handlers, may be platform specific, and may put exceptions in funny places because they aren't expecting them to change?