src/test/java/com/android/tools/r8/debuginfo/Regress233857593Test.java

// Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.debuginfo;

import static org.junit.Assert.assertEquals;

import com.android.tools.r8.TestBase;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.TestParametersCollection;
import com.android.tools.r8.utils.AndroidApiLevel;
import com.android.tools.r8.utils.codeinspector.InstructionSubject;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class Regress233857593Test extends TestBase {

  @Parameter() public TestParameters parameters;

  @Parameters(name = "{0}")
  public static TestParametersCollection data() {
    return getTestParameters().withDefaultDexRuntime().withApiLevel(AndroidApiLevel.B).build();
  }

  @Test
  public void testD8() throws Exception {
    testForD8(parameters.getBackend())
        .addProgramClasses(TestClass.class)
        .setMinApi(parameters)
        .compile()
        .inspect(
            inspector ->
                assertEquals(
                    1,
                    inspector
                        .clazz(TestClass.class)
                        .uniqueMethodWithOriginalName("testLoopPhiWithNullFirstInput")
                        .streamInstructions()
                        .filter(InstructionSubject::isGoto)
                        .count()));
  }

  static class TestClass {
    private void testLoopPhiWithNullFirstInput(boolean cond) {
      TestClass a = null;
      while (a == null) {
        if (cond) {
          a = new TestClass();
        }
      }
    }
  }
}