results.Opt as object fields could generate codegen issues

[cheatfate]

All Nim versions are affected
#141

import stew/results

type
  ValidatorSig = object
    blob: array[96, byte]
  SyncDutyAndProof = object
    slotSig: Opt[ValidatorSig]
const
  DefaultSyncDutyAndProof =
    SyncDutyAndProof(slotSig: Opt.none(ValidatorSig))

echo DefaultSyncDutyAndProof

/home/runner/.cache/nim/all_tests_d/@mtest_results.nim.c:974:143: error: ‘union <anonymous>’ has no member named ‘_o_1’; did you mean ‘_o_2’?
 N_LIB_PRIVATE NIM_CONST tyObject_SyncDutyAndProof__9atwCZvu9aDnhulGNwFXJ9cFg DefaultSyncDutyAndProof__qmlenLhfD5mHF063hF585Q = {{NIM_FALSE, {._o_1 = {}}}
                                                                                                                                               ^~~~
                                                                                                                                               _o_2
                                                                                                                                               

[deech]

Seems like a bug in Nim itself

[deech]

nim-lang/Nim#20790 should fix it.

[arnetheduck]

This is fixed both by #150 and upstream fixes