https://issues.dlang.org/show_bug.cgi?id=12918
Issue ID: 12918
Summary: Copying structs on the heap
Product: D
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P1
Component: DMD
Assignee: [email protected]
Reporter: [email protected]
We've recently added universal construction so that stuff like new int(5)
works. However, one thing that still doesn't work is copying structs on the
stack to structs on the heap when allocating them. I think that this code
should compile
struct Foo
{
int i;
}
void main()
{
auto f = Foo(5);
auto g = new Foo(f);
}
The compiler knows how to copy Foo, so it should be trivial for it to copy an
existing Foo onto the a newly allocated Foo on the heap, and it would avoid
forcing you to write code like
struct Foo
{
int i;
this(int j)
{
i = j;
}
this(Foo rhs)
{
this = rhs;
}
}
in order to get
void main()
{
auto f = Foo(5);
auto g = new Foo(f);
}
to work or from forcing you to write code like
void main()
{
auto f = Foo(5);
auto g = new Foo;
*g = f;
}
--
