Assignment overload crashes the compiler when using tuples

[edubart]

Test case

type
  Foo* = object
    boo: int

proc `=`(dest: var Foo, src: Foo) =
  debugEcho "assingment"

proc test(): auto =
  var a,b : Foo
  return (a, b)

var (a, b) = test()

It doesn't compile, nim crashes with:

SIGSEGV: Illegal storage access. (Attempt to read from nil?)

Tested nim head and stable.

Is there a workaround? I do want to overload assignment operator and use tuples with it.

[stisa]

var a,b:Foo
(a,b) = test()

This prints "assignment" 4 times ( I think I remember something about return a being translated to result = a; return result, that may be the reason ) but seems to work as a workaround.

Note that:

proc `=`(dest: var Foo, src: Foo) =
  debugEcho "assingment"
  dest = src

causes a stack overflow (because of recursively calling the assignment I guess?)

[genotrance]

Original snippet doesn't crash anymore with #head.

[Araq]

Now works.