Date: Mon, 22 Dec 2025 18:07:42 +1100
Hi,
In this code, what does "Lvalue-to-rvalue conversion [conv.lval]" do for "s" in
"int a = 1 + s;" ?
list.1
******************************************************
struct S {
operator int() {
return 0;
}
};
S s;
int a = 1 + s;
******************************************************
I assume the code is converted to:
list.2
******************************************************
struct S {
operator int() {
return 0;
}
};
S s;
int tmp = s.operator int();
int a = 1 + tmp;
******************************************************
How are these rules used in list.1 ? :
******************************************************
The result of the conversion is determined according to the following rules:
...
— Otherwise, if T has a class type, the conversion copy-initializes the result
object from the glvalue. ?????????????
...
— Otherwise, the object indicated by the glvalue is read (3.1), and the value
contained in the object is the prvalue result.
[is this invoking the conversion function ?]
******************************************************
In this code, what does "Lvalue-to-rvalue conversion [conv.lval]" do for "s" in
"int a = 1 + s;" ?
list.1
******************************************************
struct S {
operator int() {
return 0;
}
};
S s;
int a = 1 + s;
******************************************************
I assume the code is converted to:
list.2
******************************************************
struct S {
operator int() {
return 0;
}
};
S s;
int tmp = s.operator int();
int a = 1 + tmp;
******************************************************
How are these rules used in list.1 ? :
******************************************************
The result of the conversion is determined according to the following rules:
...
— Otherwise, if T has a class type, the conversion copy-initializes the result
object from the glvalue. ?????????????
...
— Otherwise, the object indicated by the glvalue is read (3.1), and the value
contained in the object is the prvalue result.
[is this invoking the conversion function ?]
******************************************************
Received on 2025-12-22 07:07:49
