JetBrains/intellij-community · error · EvaluateException

Error during generated code invocation

Error message

Error during generated code invocation 

What it means

Error "Error during generated code invocation " thrown in JetBrains/intellij-community.

Source

Thrown at java/debugger/impl/src/com/intellij/debugger/ui/impl/watch/CompilingEvaluator.java:94

    try {
      // invoke base evaluator on call code
      ExpressionEvaluator evaluator =
        DebuggerInvocationUtil.commitAndRunReadAction(myProject, new EvaluatingComputable<>() {
          @Override
          public ExpressionEvaluator compute() throws EvaluateException {
            TextWithImports callCode = getCallCode();
            PsiElement copyContext = myData.getAnchor();
            CodeFragmentFactory factory = DebuggerUtilsEx.findAppropriateCodeFragmentFactory(callCode, copyContext);
            return factory.getEvaluatorBuilder().build(factory.createPsiCodeFragment(callCode, copyContext, myProject),
                                                       // can not use evaluation position here, it does not match classes then
                                                       SourcePosition.createFromElement(copyContext));
          }
        });
      return evaluator.evaluate(autoLoadContext);
    }
    catch (Exception e) {
      throw new EvaluateException("Error during generated code invocation " + e, e);
    }
  }

  private void defineClasses(Collection<ClassObject> classes,
                             EvaluationContextImpl context,
                             DebugProcess process,
                             ClassLoaderReference classLoader) throws EvaluateException {
    boolean useMagicAccessorImpl = myData.useMagicAccessor();

    defineClassesForEvaluation(classes, context, process, classLoader, GEN_CLASS_NAME, useMagicAccessorImpl);
    process.findClass(context, getGenClassQName(), classLoader);
  }

  @ApiStatus.Internal
  public static void defineClassesForEvaluation(@NotNull Collection<ClassObject> classes,
                                                 EvaluationContextImpl context,
                                                 DebugProcess process,
                                                 ClassLoaderReference classLoader,

View on GitHub (pinned to be881553f2)

Solutions

1. Simplify the expression so it compiles, or check the reported cause for the generated-code invocation failure.
2. Ensure the expression does not call methods with side effects that throw in the target VM.

Example fix

Evaluate a smaller sub-expression first in Evaluate Expression to locate the failing part.

When it happens

Trigger: The compiling evaluator generated bytecode for an expression but invoking it in the target VM failed.

Common situations: Expressions throwing at runtime in the debuggee or using constructs unsupported by the compiling evaluator.

AI-assisted analysis of JetBrains/intellij-community@be881553f2 (2026-08-14). Data as JSON: /api/errors/6b8bc1533539b9a0. Report an issue: GitHub.