Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-6911972

"cannot find symbol" errors for classes which are about to be generated by an AP

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 6
    • Fix Version/s: None
    • Component/s: tools
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      linux

      Description

      Reproducible with JDK 6 or 7:

      ---%<---
      $ cat ProcessorImpl.java UsesGenerated.java
      import java.io.IOException;
      import java.io.Writer;
      import java.util.Set;
      import javax.annotation.processing.AbstractProcessor;
      import javax.annotation.processing.RoundEnvironment;
      import javax.annotation.processing.SupportedAnnotationTypes;
      import javax.annotation.processing.SupportedSourceVersion;
      import javax.lang.model.SourceVersion;
      import javax.lang.model.element.TypeElement;
      import javax.tools.Diagnostic.Kind;
      @SupportedAnnotationTypes("*")
      @SupportedSourceVersion(SourceVersion.RELEASE_7)
      public class ProcessorImpl extends AbstractProcessor {
          boolean ran;
          public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
              if (roundEnv.processingOver()) {
                  return false;
              }
              if (ran) {
                  return false;
              }
              try {
                  Writer w = processingEnv.getFiler().createSourceFile("Generated").openWriter();
                  w.write("class Generated {}");
                  w.close();
              } catch (IOException x) {
                  processingEnv.getMessager().printMessage(Kind.ERROR, x.toString());
              }
              ran = true;
              return true;
          }
      }
      public class UsesGenerated {
          Generated g;
      }
      $ javac ProcessorImpl.java
      $ javac -J-showversion -processorpath . -processor ProcessorImpl UsesGenerated.java
      java version "1.6.0_17"
      Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
      Java HotSpot(TM) Client VM (build 14.3-b01, mixed mode, sharing)

      UsesGenerated.java:2: cannot find symbol
      symbol : class Generated
      location: class UsesGenerated
          Generated g;
          ^
      $ javap -classpath . Generated UsesGenerated
      Compiled from "Generated.java"
      class Generated extends java.lang.Object{
          Generated();
      }

      Compiled from "UsesGenerated.java"
      public class UsesGenerated extends java.lang.Object{
          Generated g;
          public UsesGenerated();
      }
      ---%<---

      The error output from javac makes it look like compilation failed. In fact, everything went normally and all classes have been compiled successfully. "cannot find symbol" errors may be misleading when they are produced before a source-generating annotation processor has run.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                darcy Joe Darcy
                Reporter:
                jglick Jesse Glick (Inactive)
              • Votes:
                0 Vote for this issue
                Watchers:
                1 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: