java.lang.IllegalArgumentException: The frame slot '0' is not known by the frame descriptor.

[ghost]

The exception occurs in the following code, since rc2.
To reproduce it's essential to

• create a new Context from the same Engine. When creating contexts with Context.create("js") (and a new engine is used each time) there's no error.
• context must be closed after use; if not closed there's no error
• javascript contains a const; for a var there's no error

The error occurs on the 2nd iteration.

import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Engine;

public class Bug {

  public static void main(String[] args) throws Exception {

    String snippet = "const x=1";

    Engine engine = Engine.create();
    Context context;

    for (int i = 0; i < 2; i++) {
      context = Context.newBuilder("js").engine(engine).build();
      context.eval("js", snippet);
      context.close();
      System.out.println("ok");
    }
  }
}

Result of running the class:

hans@ubuntu-desktop:~/graal$ java Bug
ok
Exception in thread "main" org.graalvm.polyglot.PolyglotException: java.lang.IllegalArgumentException: The frame slot '0' is not known by the frame descriptor.
at org.graalvm.compiler.truffle.runtime.FrameWithoutBoxing.checkSlotIndex(FrameWithoutBoxing.java:297)
at org.graalvm.compiler.truffle.runtime.FrameWithoutBoxing.verifySet(FrameWithoutBoxing.java:280)
at org.graalvm.compiler.truffle.runtime.FrameWithoutBoxing.setObject(FrameWithoutBoxing.java:122)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNode.doObject(JSWriteFrameSlotNode.java:138)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.executeAndSpecialize(JSWriteScopeFrameSlotNodeGen.java:366)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.execute_generic3(JSWriteScopeFrameSlotNodeGen.java:195)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.execute(JSWriteScopeFrameSlotNodeGen.java:88)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.executeVoid(JSWriteScopeFrameSlotNodeGen.java:294)
at com.oracle.truffle.js.nodes.control.ExprBlockNode.execute(ExprBlockNode.java:68)
at com.oracle.truffle.js.nodes.function.FunctionBodyNode.execute(FunctionBodyNode.java:66)
at com.oracle.truffle.js.nodes.function.FunctionRootNode.executeInRealm(FunctionRootNode.java:139)
at com.oracle.truffle.js.runtime.JavaScriptRealmBoundaryRootNode.execute(JavaScriptRealmBoundaryRootNode.java:92)
at :program(Unknown)
at org.graalvm.polyglot.Context.eval(Context.java:336)
at Bug.main(Bug.java:15)
Original Internal Error:
java.lang.IllegalArgumentException: The frame slot '0' is not known by the frame descriptor.
at org.graalvm.compiler.truffle.runtime.FrameWithoutBoxing.checkSlotIndex(FrameWithoutBoxing.java:297)
at org.graalvm.compiler.truffle.runtime.FrameWithoutBoxing.verifySet(FrameWithoutBoxing.java:280)
at org.graalvm.compiler.truffle.runtime.FrameWithoutBoxing.setObject(FrameWithoutBoxing.java:122)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNode.doObject(JSWriteFrameSlotNode.java:138)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.executeAndSpecialize(JSWriteScopeFrameSlotNodeGen.java:366)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.execute_generic3(JSWriteScopeFrameSlotNodeGen.java:195)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.execute(JSWriteScopeFrameSlotNodeGen.java:88)
at com.oracle.truffle.js.nodes.access.JSWriteScopeFrameSlotNodeGen.executeVoid(JSWriteScopeFrameSlotNodeGen.java:294)
at com.oracle.truffle.js.nodes.control.ExprBlockNode.execute(ExprBlockNode.java:68)
at com.oracle.truffle.js.nodes.function.FunctionBodyNode.execute(FunctionBodyNode.java:66)
at com.oracle.truffle.js.nodes.function.FunctionRootNode.executeInRealm(FunctionRootNode.java:139)
at com.oracle.truffle.js.runtime.JavaScriptRealmBoundaryRootNode.execute(JavaScriptRealmBoundaryRootNode.java:92)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callProxy(OptimizedCallTarget.java:262)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callRoot(OptimizedCallTarget.java:251)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callBoundary(OptimizedCallTarget.java:241)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.doInvoke(OptimizedCallTarget.java:226)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callDirect(OptimizedCallTarget.java:209)
at org.graalvm.compiler.truffle.runtime.OptimizedDirectCallNode.callProxy(OptimizedDirectCallNode.java:86)
at org.graalvm.compiler.truffle.runtime.OptimizedDirectCallNode.call(OptimizedDirectCallNode.java:70)
at com.oracle.truffle.js.parser.JavaScriptLanguage$1.execute(JavaScriptLanguage.java:211)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callProxy(OptimizedCallTarget.java:262)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callRoot(OptimizedCallTarget.java:251)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.callBoundary(OptimizedCallTarget.java:241)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.doInvoke(OptimizedCallTarget.java:226)
at org.graalvm.compiler.truffle.runtime.OptimizedCallTarget.call(OptimizedCallTarget.java:202)
at com.oracle.truffle.api.vm.PolyglotContextImpl.eval(PolyglotContextImpl.java:746)
at org.graalvm.polyglot.Context.eval(Context.java:311)
at org.graalvm.polyglot.Context.eval(Context.java:336)
at Bug.main(Bug.java:15)
Caused by: Attached Guest Language Frames (2)

[wirthi]

Thanks for reporting, @hanzr.

@woess is already looking into the problem.

[woess]

Thanks again for the bug report. The fix is now in master and will be released in rc3.