alternative to raises: []

[planetis-m]

proc initialize(): cint {.exportc: "LLVMFuzzerInitialize".} =
  {.emit: "N_CDECL(void, NimMain)(void); NimMain();".}

template testOneInput(body: untyped) =
  proc LLVMFuzzerTestOneInput(data {.inject.}: ptr UncheckedArray[byte], len {.inject.}: int): cint {.
      exportc.} =
    try:
      body
    finally: {.emit: "nimTestErrorFlag();".}

testOneInput:
  if true:
    raise newException(ValueError, "my my my")

[planetis-m]

Actually a bug nim-lang/Nim#18215