Re: sizeof

[Russell Shaw <rjshaw@netspace.net.au>]

On 11/5/22 18:16, Russell Shaw wrote:
...
> "sizeof(int()) => 1" just seems wrong, but maybe it's a matter of taste that has 
> been explicitly decided.

Despite all the proceeding, i don't think "sizeof(int())" should be sizeof ptr 
to function now. The objective of sizeof is for finding the size an item will be 
in an array of the items.

sizeof(int[3]);  => 12
sizeof(int());   => illegal

"int()" is a legal type-id for a function, but you can't have an array of 
functions. "int()" could be decayed to a ptr "int(*)()", but that would be 
inconsistant with "int[3]" that you wouldn't want to decay.

So i conclude that g++ is right by saying "warning: invalid application of 
‘sizeof’ to a function type", and gdb should not say "sizeof(int())" => 1