Proc default arg error, `internal error: expr`

[al6x]

Following example would fail with compiler error, playground

Error: internal error: expr: param not init query_13251018

Example

import strformat

proc somefn[T](query: string, _: type[T], message = query) = discard

somefn(fmt"", string)

Current Output

Hint: used config file '/playground/nim/config/nim.cfg' [Conf]
Hint: used config file '/playground/nim/config/config.nims' [Conf]
............
/usercode/in.nim(3, 53) Error: internal error: expr: param not init query_13251018
No stack traceback available
To create a stacktrace, rerun compilation with './koch temp c <file>', see https://nim-lang.github.io/Nim/intern.html#debugging-the-compiler for details

$ nim -v
Nim Compiler Version 1.4.6 [MacOSX: amd64]
Compiled at 2021-05-06
Copyright (c) 2006-2020 by Andreas Rumpf

active boot switches: -d:release

[bung87]

nkStmtListExpr goes to compiler/ccgcalls.nim genArg else branch

[metagn]

Works since 2.2?