Re: returning lvalue in C vs C++

Alf P. Steinbach wrote:
int main(void)
{
struct thing t = {20};
int y = (f() = t).x;


This is invalid in both C and C++.

Why is this invalid in C++? If I understand correctly, f() returns an rvalue of class type, and therefore you can call the operator= member for it.

For what it's worth, both g++ and Comeau think it is valid.

Alan
.

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