Benjamin Thaut <[email protected]> wrote:
Hi, I'm writing a vec4 math struct and I have a method of which the
return value has to be a lvalue so I wonder which is the correct way to
do this:
vec4 Normalize() const { ... } //won't work, not a lvalue
ref vec4 Normalize() const {
vec4 temp;
...
return temp;
} //will this lead to a segfault or not?
Will simply not compile.
(Error: escaping reference to local variable temp)
ref vec4 Normalize() const {
vec4* temp = new vec4;
...
return *temp;
} //ugly, don't want to allocate anything on the heap
This will work.
auto ref vec4 Normalize() const {
vec4 temp;
...
return temp;
} //will this lead to a segfault?
The compiler will conclude that temp cannot be returned as ref, and
thus do a value return.
Or do I need to do it totaly in some other way?
Don't know. Why does it have to be an lvalue?
--
Simen
