fix scala#14626

griggt · griggt · commit 797928f9b8ad · 2022-04-04T10:17:08.000-07:00
diff --git a/compiler/src/dotty/tools/dotc/ast/Desugar.scala b/compiler/src/dotty/tools/dotc/ast/Desugar.scala
@@ -1618,7 +1618,7 @@ object desugar {
         if gen.checkMode == GenCheckMode.FilterAlways then // pattern was prefixed by `case`
           false
         else
-          gen.checkMode != GenCheckMode.FilterNow
+          gen.checkMode == GenCheckMode.Ignore
           || isVarBinding(gen.pat)
           || isIrrefutable(gen.pat, gen.expr)
 
diff --git a/compiler/test-resources/repl/i14626 b/compiler/test-resources/repl/i14626
@@ -0,0 +1,5 @@
+// scalac: -source:future
+scala> for (a, b) <- List("a","b","c").lazyZip(List(1,2,3)) do println(s"$a$b")
+a1
+b2
+c3

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +// scalac: -source:future
 +scala> for (a, b) <- List("a","b","c").lazyZip(List(1,2,3)) do println(s"$a$b")
 +a1
 +b2
 +c3