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-rw-r--r--src/main/scala/scala/async/internal/AsyncAnalysis.scala3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/main/scala/scala/async/internal/AsyncAnalysis.scala b/src/main/scala/scala/async/internal/AsyncAnalysis.scala
index 62842c9..122109e 100644
--- a/src/main/scala/scala/async/internal/AsyncAnalysis.scala
+++ b/src/main/scala/scala/async/internal/AsyncAnalysis.scala
@@ -63,6 +63,9 @@ trait AsyncAnalysis {
case ValDef(mods, _, _, _) if mods.hasFlag(Flag.LAZY) =>
// TODO lift this restriction
abort(tree.pos, "lazy vals are illegal within an async block")
+ case CaseDef(_, guard, _) if guard exists isAwait =>
+ // TODO lift this restriction
+ reportUnsupportedAwait(tree, "pattern guard")
case _ =>
super.traverse(tree)
}