fixes #9076

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/discard/tneedsdiscard_in_for.nim b/tests/discard/tneedsdiscard_in_for.nim
new file mode 100644
index 000000000..5658f4ba2
--- /dev/null
+++ b/tests/discard/tneedsdiscard_in_for.nim
@@ -0,0 +1,22 @@
+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()