=== ./T.java
public class T extends a.A {

  public static void main(String[] args) {
    new T().f(42);
  }

  public void f(int x) {
    Runnable r;
    r = () -> {
      System.err.println(x);
      new I();
    };
    // r = () -> new I();
  }
}
=== ./a/A.java
package a;

public class A {
  public class I {}
}
===

```
$ javac -fullversion
javac full version "24-ea+6-619"
$ javac a/A.java T.java
$ java T
...
Caused by: java.lang.VerifyError: Bad local variable type
Exception Details:
  Location:
    T.lambda$f$0(I)V @11: aload_0
  Reason:
    Type integer (current frame, locals[0]) is not assignable to reference type
  Current Frame:
    bci: @11
    flags: { }
    locals: { integer }
    stack: { uninitialized 7, uninitialized 7 }
  Bytecode:
    0000000: b200 121a b600 18bb 001d 592a b700 1f57
    0000010: b1
```

If the line with `r = () -> new I();` is uncommented, javac crashes:

```
javac a/A.java T.java
...
java.lang.NullPointerException: Cannot read field "sym" because "this.lvar[0]" is null
        at jdk.compiler/com.sun.tools.javac.jvm.Code.emitop0(Code.java:572)
        at jdk.compiler/com.sun.tools.javac.jvm.Items$SelfItem.load(Items.java:369)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:884)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitNewClass(Gen.java:2041)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1912)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:859)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitExec(Gen.java:1802)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1644)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genDef(Gen.java:588)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStat(Gen.java:623)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStat(Gen.java:609)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStats(Gen.java:660)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.internalVisitBlock(Gen.java:1121)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1085)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1133)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genDef(Gen.java:588)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStat(Gen.java:623)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:949)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:912)
        at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:957)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genDef(Gen.java:588)
        at jdk.compiler/com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2494)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:770)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1702)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1670)
        at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:977)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:319)
        at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:178)
        at jdk.compiler/com.sun.tools.javac.Main.compile(Main.java:66)
        at jdk.compiler/com.sun.tools.javac.Main.main(Main.java:52)
```

The code for the lambda is change from

```
  private void lambda$f$0(int);
    Code:
       0: getstatic #18 // Field java/lang/System.err:Ljava/io/PrintStream;
       3: iload_1
       4: invokevirtual #24 // Method java/io/PrintStream.println:(I)V
       7: new #29 // class a/A$I
      10: dup
      11: aload_0
      12: invokespecial #31 // Method a/A$I."<init>":(La/A;)V
      15: pop
      16: return
```

to

```
  private static void lambda$f$0(int);
    Code:
       0: getstatic #18 // Field java/lang/System.err:Ljava/io/PrintStream;
       3: iload_0
       4: invokevirtual #24 // Method java/io/PrintStream.println:(I)V
       7: new #29 // class a/A$I
      10: dup
      11: aload_0
      12: invokespecial #31 // Method a/A$I."<init>":(La/A;)V
      15: pop
      16: return
```

Note that the lambda is become static and failing to implicitly capture the enclosing instance, and then it is trying to pass aload_0 to the inner class constructor, which is the captured int parameter.