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carbon-lang/executable_semantics/testdata/experimental_continuation/await_maintains_scope.carbon
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// RUN: %{executable_semantics} %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
// RUN: %{executable_semantics} --trace %s 2>&1 | \
// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: %{executable_semantics} %s
// CHECK: result: 3
package ExecutableSemanticsTest api;
// Test access to block-scoped variables upon resuming a continuation.
fn Main() -> i32 {
var y: i32 = 0;
__continuation k {
var x: i32 = 0;
x = x + 1;
__await;
x = x + 2;
y = x;
}
__run k;
__run k;
return y;
}