Re: Invoking a function through function pointer

Peter Nilsson wrote:
> ...
> It's a little known quirk that both C and C++ accept...
>
> #include <stdio.h>
>
> int main(void)
> {
> (***** /*...*/ *****puts)("Hello World!");
> return 0;
> }
>
> Indirection on an expression with function type just produces the
> same function designator.
> ...

.... although the term "function designator" is C-specific. In C++ the
situation is a bit different and, for example, as a consequence of that,
the extra parentheses (with or without '*' inside) will disable
argument-dependent name lookup

namespace test {
struct s {};
void foo(s);
}

int main() {
test::s s;
foo(s); // OK
(foo)(s); // ERROR
(*foo)(s); // ERROR
}

--
Best regards,
Andrey Tarasevich
.

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