[Issue 13930] New: std.concurrency can't immutable AA send to another thread

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13930

          Issue ID: 13930
           Summary: std.concurrency can't immutable AA send to another
                    thread
           Product: D
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Phobos
          Assignee: nobody at puremagic.com
          Reporter: code at dawg.eu

cat > bug.d << CODE
import std.concurrency;

void main()
{
    immutable aa = ["0":0];
    thisTid.send(aa);
}
CODE

dmd -c bug

----

Trying to send an immutable associative array to another thread fails with this
error messsage. Looks like a problem with copying in Variant or so.
Hash tables are basic types so this should be supported.

----
/usr/include/dmd/phobos/std/variant.d(621): Error: template instance
std.variant.VariantN!32LU.VariantN.handler!(immutable(int[string])) error
instantiating
/usr/include/dmd/phobos/std/variant.d(571):        instantiated from here:
opAssign!(immutable(int[string]))
/usr/include/dmd/phobos/std/concurrency.d(109):        instantiated from here:
__ctor!(immutable(int[string]))
/usr/include/dmd/phobos/std/concurrency.d(588):        instantiated from here:
__ctor!(immutable(int[string]))
/usr/include/dmd/phobos/std/concurrency.d(578):        instantiated from here:
_send!(immutable(int[string]))
/usr/include/dmd/phobos/std/concurrency.d(556):        instantiated from here:
_send!(immutable(int[string]))
bug.d(6):        instantiated from here: send!(immutable(int[string]))
----

--