tests/discard/tneedsdiscard_in_for.nim


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discard """
  line: 22
  errormsg: '''expression 'premultiply(app.gradient[i])' is of type 'Rgba8' and has to be discarded'''
"""

# bug #9076
type
  Rgba8 = object

proc premultiply*(c: var Rgba8): var Rgba8 =
  discard

type
  App = ref object
    gradient: seq[Rgba8]

method onDraw(app: App) {.base.} =
  var
    width  = 100'f64

  for i in 0..<width.int:
    app.gradient[i].premultiply()