oracle/graal · error · RuntimeException

No instance of Interop can be created

Error message

No instance of Interop can be created

What it means

Error "No instance of Interop can be created" thrown in oracle/graal.

Source

Thrown at espresso/src/com.oracle.truffle.espresso.polyglot/src/com/oracle/truffle/espresso/polyglot/Interop.java:62

import java.nio.ByteOrder;

/**
 * Provides access to the interoperability message protocol between Truffle languages. Every method
 * represents one message specified by the protocol. In the following text we will abbreviate
 * interoperability with interop. This class provides access to a <b>strict subset</b> of Truffle's
 * interop protocol.
 * 
 * <p>
 * Foreign objects will always have a Java type in Espresso, how a Java type is attached to a
 * foreign object remains an implementation detail.
 * 
 * @see Polyglot
 * @since 21.0
 */
public final class Interop {

    private Interop() {
        throw new RuntimeException("No instance of Interop can be created");
    }

    // region Null Messages

    /**
     * Returns <code>true</code> if the receiver represents a <code>null</code> like value, else
     * <code>false</code>. Most object oriented languages have one or many values representing null
     * values. Invoking this message does not cause any observable side-effects.
     *
     * Foreign objects for which this method returns <code>true</code> behave the same as Java
     * <code>null</code>, but its identity is preserved.
     *
     * @since 21.0
     */
    public static native boolean isNull(Object receiver);

    // region Null Messages

View on GitHub (pinned to a66e9ccd1d)

Solutions

1. Fix the condition reported by the error: No instance of Interop can be created
2. Check the throwing call site and ensure its documented preconditions (argument values, types, environment, or configuration) are satisfied before the call.

Example fix

Validate inputs and environment so that the failing condition does not occur: No instance of Interop can be created

When it happens

Trigger: Thrown at espresso/src/com.oracle.truffle.espresso.polyglot/src/com/oracle/truffle/espresso/polyglot/Interop.java:62 when the library encounters an invalid state.

Common situations: Occurs when a caller violates the contract guarded by this check: No instance of Interop can be created

AI-assisted analysis of oracle/graal@a66e9ccd1d (2026-08-14). Data as JSON: /api/errors/f3951624184549ec. Report an issue: GitHub.