Oops, AIOOBE ?

[Remi Forax]

Hi Vicente,
another bug :)

import java.util.HashMap;
import java.util.function.Function;

public class Visitor<R> {
  private final HashMap<Class<?>, Function<Object, R>> map = new HashMap<>();
  
  public void call(Object o) = map.get(o.getClass())::apply;
}


An exception has occurred in the compiler (12-amber). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 16
	at jdk.compiler/com.sun.tools.javac.jvm.Code$State.pop(Code.java:1764)
	at jdk.compiler/com.sun.tools.javac.jvm.Code.emitop0(Code.java:862)
	at jdk.compiler/com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:256)
	at jdk.compiler/com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:269)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:814)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitTypeCast(Gen.java:2007)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCTypeCast.accept(JCTree.java:2098)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:812)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitExec(Gen.java:1590)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1524)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genDef(Gen.java:590)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStat(Gen.java:625)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStat(Gen.java:611)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStats(Gen.java:662)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1026)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1033)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genDef(Gen.java:590)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genStat(Gen.java:625)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:896)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:859)
	at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:879)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genDef(Gen.java:590)
	at jdk.compiler/com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2196)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:756)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1635)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1603)
	at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:973)
	at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:311)
	at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:170)
	at jdk.compiler/com.sun.tools.javac.main.JavacToolProvider.run(JavacToolProvider.java:46)
	at java.base/java.util.spi.ToolProvider.run(ToolProvider.java:137)


regards,
Rémi