GCC incompatible type error when passing generated closure function stored in const

[hamidb80]

Description

import std/[algorithm, sugar]

proc genFn(c: int): auto =
  return proc (a, b: int): int =
    c # [error]
    # 1 # [works fine]

const fn = genFn 1 # [error]
# const fn = (a, b: int) => 1 # [works fine]
# let fn = genFn 1 # [works fine]

echo sorted(@[5, 7, 1], fn)

Nim Version

1.6.10

Current Output

C:\Users\HamidB80\nimcache\play_d\@mplay.nim.c:115:70: error: 'T3_' undeclared here (not in a function)
 N_LIB_PRIVATE NIM_CONST tyProc__EGDHMEKq2nFyDlkU6lrC3A fn__play_42 = T3_;
                                                                      ^~~
C:\Users\HamidB80\nimcache\play_d\@mplay.nim.c: In function 'NimMainModule':
C:\Users\HamidB80\nimcache\play_d\@mplay.nim.c:226:49: error: incompatible types when assigning to type 'void *' from type 'tyObject_Env_playdotnim_genFn___9cbEZv2HaI6Rv8hCkO7M63Q' {aka 'const struct tyObject_Env_playdotnim_genFn___9cbEZv2HaI6Rv8hCkO7M63Q'}
  T3_.ClP_0 = colonanonymous___play_6; T3_.ClE_0 = TM__r9bkcJ6PRJ5n7ORNxxJ5ryg_2;

Expected Output

compiles successfully

Possible Solution

No response

Additional Information

No response

[hamidb80]

it works with static int though

- proc genFn(c: int): auto =
+ proc genFn(c: static int): auto =

[ringabout]

Duplicate of #16534