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// https://issues.dlang.org/show_bug.cgi?id=21543
class B
{
Nullable!B data;
alias data this;
}
void test1()
{
B b;
Nullable!B n;
}
struct Nullable(T)
{
T payload;
void opAssign()(T)
{
move(payload);
}
inout(T) get_() inout
{
return payload;
}
alias get_ this;
}
// another version with chain of 3 alias this
struct C
{
Nullable2 data;
alias data this;
}
void test2()
{
C c;
Nullable2 n2 = &c;
Nullable3 n3 = &c;
// these are to check a sane -vcg-ast output
fn1(c);
fn1(n2);
fn1(n3);
fn2(c);
fn2(n2);
fn2(n3);
fn3(c);
fn3(n2);
fn3(n3);
}
void fn1(C x) {}
void fn2(Nullable2 x) {}
void fn3(Nullable3 x) {}
struct Nullable2
{
Nullable3 payload;
this(C* c)
{
payload = Nullable3(c);
}
void opAssign()(Nullable3)
{
move(payload);
}
inout(Nullable3) get_() inout
{
return payload;
}
alias get_ this;
}
struct Nullable3
{
C* payload;
this(C* c)
{
payload = c;
}
void opAssign()(C)
{
move(payload);
}
inout(C) get_() inout
{
return *payload;
}
alias get_ this;
}
T move(T)(ref T source)
{
return source;
}
T move(T)(T source)
{
return source;
}
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