commit c26443cf0b0addd138818855f3387381414d6848
author Søren Gjesse <sgjesse@google.com> Wed Jan 08 14:26:13 2025 +0100
committer Søren Gjesse <sgjesse@google.com> Wed Jan 08 07:04:08 2025 -0800
tree b6d8a90104b8a112dba9d7bd8a9ff8d186bab513
parent 10efe41e7f5f09ae5ef02a49802471da440d8e9c

Reproduce issue 387258081

Reflective identification of instantiation fails to keep the
instantiated class.

Bug: b/387258081
Change-Id: I79a6f418564beb6fbd2b0f70536ec8d6cee4f1a0

src/test/java/com/android/tools/r8/shaking/reflection/ReflectiveNewInstanceTest.java

diff --git a/src/test/java/com/android/tools/r8/shaking/reflection/ReflectiveNewInstanceTest.java b/src/test/java/com/android/tools/r8/shaking/reflection/ReflectiveNewInstanceTest.java
index 301c06a..cdb8f78 100644
--- a/src/test/java/com/android/tools/r8/shaking/reflection/ReflectiveNewInstanceTest.java
+++ b/src/test/java/com/android/tools/r8/shaking/reflection/ReflectiveNewInstanceTest.java
@@ -39,7 +39,8 @@
   @Test
   public void test() throws Exception {
     String expectedOutput =
-        StringUtils.lines("Success", "Success", "Success", "Success", "Success");
+        StringUtils.lines(
+            "Success", "Success", "Success", "Success", "Success", "Success", "Success");
 
     if (parameters.isCfRuntime()) {
       testForJvm(parameters)
@@ -132,6 +133,25 @@
       } catch (Exception e) {
         System.out.println("Fail");
       }
+
+      try {
+        UninitializedMemberUsed o = UninitializedMemberUsed.class.newInstance();
+        if (!o.b) {
+          o.a();
+        }
+      } catch (Exception e) {
+        System.out.println("Fail");
+      }
+
+      try {
+        UninitializedMemberUsed o =
+            UninitializedMemberUsed.class.getDeclaredConstructor().newInstance();
+        if (!o.b) {
+          o.a();
+        }
+      } catch (Exception e) {
+        System.out.println("Fail");
+      }
     }
   }
 
@@ -153,4 +173,13 @@
     @KeepUnusedArguments
     public D(Object arg1, String arg2) {}
   }
+
+  public static class UninitializedMemberUsed {
+    boolean b;
+
+    public void a() {
+      this.b = true;
+      System.out.println("Success");
+    }
+  }
 }