ADDITIONAL SYSTEM INFORMATION :
openjdk 11.0.19 2023-04-18
OpenJDK Runtime Environment (build 11.0.19+7-post-Ubuntu-0ubuntu122.04.1)
OpenJDK 64-Bit Server VM (build 11.0.19+7-post-Ubuntu-0ubuntu122.04.1, mixed mode, sharing)

A DESCRIPTION OF THE PROBLEM :
An internal assertion failure is thrown when MethodEmitter#load calls Symbol#getSlot on a Symbol for which Symbol#isSlotted returns false.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile the attached test case.
2. Run: java -cp <path to compiled test class> -ea Test

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Test class runs to completion without an assertion failure.
ACTUAL -
An internal assertion fails:
Exception in thread "main" java.lang.AssertionError: Failed generating bytecode for <eval>:1
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CompilationPhase$BytecodeGenerationPhase.transform(CompilationPhase.java:437)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CompilationPhase.apply(CompilationPhase.java:631)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.Compiler.compile(Compiler.java:657)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.RecompilableScriptFunctionData.compileTypeSpecialization(RecompilableScriptFunctionData.java:727)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.RecompilableScriptFunctionData.getBest(RecompilableScriptFunctionData.java:907)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunctionData.getBest(ScriptFunctionData.java:393)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunctionData.getBestInvoker(ScriptFunctionData.java:252)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunction.findCallMethod(ScriptFunction.java:917)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptObject.lookup(ScriptObject.java:1880)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:104)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:96)
        at jdk.dynalink/jdk.dynalink.linker.support.CompositeTypeBasedGuardingDynamicLinker.getGuardedInvocation(CompositeTypeBasedGuardingDynamicLinker.java:161)
        at jdk.dynalink/jdk.dynalink.linker.support.CompositeGuardingDynamicLinker.getGuardedInvocation(CompositeGuardingDynamicLinker.java:109)
        at jdk.dynalink/jdk.dynalink.LinkerServicesImpl.lambda$getGuardedInvocation$0(LinkerServicesImpl.java:137)
        at jdk.dynalink/jdk.dynalink.LinkerServicesImpl.getWithLookupInternal(LinkerServicesImpl.java:168)
        at jdk.dynalink/jdk.dynalink.LinkerServicesImpl.getGuardedInvocation(LinkerServicesImpl.java:135)
        at jdk.dynalink/jdk.dynalink.DynamicLinker.relink(DynamicLinker.java:242)
        at jdk.scripting.nashorn.scripts/jdk.nashorn.internal.scripts.Script$Recompilation$1$\^eval\_/0x000000084015f840.:program(<eval>:1)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:655)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:513)
        at jdk.scripting.nashorn/jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:527)
        at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:456)
        at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:413)
        at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:409)
        at jdk.scripting.nashorn/jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:162)
        at java.scripting/javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264)
        at Test.main(Test.java:6)
Caused by: java.lang.AssertionError
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Symbol.getSlot(Symbol.java:565)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.MethodEmitter.load(MethodEmitter.java:945)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.MethodEmitter.emitLocalVariableConversion(MethodEmitter.java:2589)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.MethodEmitter.beforeJoinPoint(MethodEmitter.java:2546)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CodeGenerator.leaveBlock(CodeGenerator.java:1289)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Block.accept(Block.java:235)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextNode$Acceptor.accept(LexicalContextNode.java:57)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Block.accept(Block.java:511)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CodeGenerator.enterTryNode(CodeGenerator.java:3212)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.TryNode.accept(TryNode.java:127)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextNode$Acceptor.accept(LexicalContextNode.java:57)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextStatement.accept(LexicalContextStatement.java:55)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.TryNode.accept(TryNode.java:39)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Node.accept(Node.java:286)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Block.accept(Block.java:235)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextNode$Acceptor.accept(LexicalContextNode.java:57)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Block.accept(Block.java:511)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CodeGenerator.enterBlockStatement(CodeGenerator.java:1740)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.BlockStatement.accept(BlockStatement.java:104)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Node.accept(Node.java:286)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Block.accept(Block.java:235)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextNode$Acceptor.accept(LexicalContextNode.java:57)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.Block.accept(Block.java:511)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.FunctionNode.accept(FunctionNode.java:405)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextNode$Acceptor.accept(LexicalContextNode.java:57)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.LexicalContextExpression.accept(LexicalContextExpression.java:47)
        at jdk.scripting.nashorn/jdk.nashorn.internal.ir.FunctionNode.accept(FunctionNode.java:57)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CompilationPhase.transformFunction(CompilationPhase.java:635)
        at jdk.scripting.nashorn/jdk.nashorn.internal.codegen.CompilationPhase$BytecodeGenerationPhase.transform(CompilationPhase.java:424)
        ... 26 more

---------- BEGIN SOURCE ----------
import javax.script.ScriptEngineManager;

public class Test {
    public static void main(String[] args) throws Exception {
        new ScriptEngineManager().getEngineByName("nashorn")
                .eval("function x(){ try { try {} catch (a) {a++;} } catch (b) {}} x();");
    }
}
---------- END SOURCE ----------

FREQUENCY : always