Index: pkg/compiler/lib/src/cps_ir/cps_ir_builder_visitor.dart |
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_builder_visitor.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_builder_visitor.dart |
index e859eef61e5b502dd98b18e5233d2ae187b0d791..ea7bf3a1fe80c63bc88acd16a83908be7d0c4354 100644 |
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_builder_visitor.dart |
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_builder_visitor.dart |
@@ -1035,6 +1035,9 @@ class DartCapturedVariables extends ast.Visitor |
visitFunctionExpression(ast.FunctionExpression node) { |
FunctionElement oldFunction = currentFunction; |
currentFunction = elements[node]; |
+ if (currentFunction.asyncMarker != AsyncMarker.SYNC) { |
+ giveup(node, "cannot handle async/sync*/async* functions"); |
+ } |
if (node.initializers != null) { |
insideInitializer = true; |
visit(node.initializers); |
@@ -1128,6 +1131,9 @@ class DartIrBuilderVisitor extends IrBuilderVisitor { |
ir.FunctionDefinition buildFunction(FunctionElement element) { |
assert(invariant(element, element.isImplementation)); |
ast.FunctionExpression node = element.node; |
+ if (element.asyncMarker != AsyncMarker.SYNC) { |
+ giveup(null, 'cannot handle async-await'); |
+ } |
if (!element.isSynthesized) { |
assert(node != null); |