Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-7105317

NPE at com.sun.tools.javac.comp.Lower.visitStringSwitch(Lower.java:3456)

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 7
    • Fix Version/s: None
    • Component/s: tools
    • Labels:
    • Subcomponent:
    • CPU:
      sparc
    • OS:
      solaris_10

      Description

      FULL PRODUCT VERSION :
      $ /usr/jdk/instances/jdk1.7.0/bin/java -version
      java version "1.7.0"
      Java(TM) SE Runtime Environment (build 1.7.0-b148)
      Java HotSpot(TM) Server VM (build 21.0-b18, mixed mode)
      $ /usr/jdk/instances/jdk1.7.0/bin/java -d64 -version
      java version "1.7.0"
      Java(TM) SE Runtime Environment (build 1.7.0-b148)
      Java HotSpot(TM) 64-Bit Server VM (build 21.0-b18, mixed mode)
      $ /usr/jdk/instances/jdk1.7.0/bin/javac -version
      javac 1.7.0
      $ /usr/jdk/instances/jdk1.7.0/bin/javac -d64 -version
      javac 1.7.0

      ADDITIONAL OS VERSION INFORMATION :
      $ more /etc/release
                                 Oracle Solaris 11 11/11 X86
        Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved.
                                  Assembled 11 October 2011
      $ uname -a
      SunOS perf2270-59 5.11 11.0 i86pc i386 i86pc




      A DESCRIPTION OF THE PROBLEM :
      Use of the below code in Switc-String results in javac failure:

                      case ("a"):

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      $ cat >SwitchStringBug.java <EOF
      public class SwitchStringBug extends Thread {
      public static void main(String[] args) {
              for (String arg : args) {
                      switch (arg) {
                      case ("a"):
                              System.err.println("A");
                              break;
                      }
              }
      }
      } /** End Class. */
      EOF
      $ /usr/jdk/instances/jdk1.7.0/bin/javac SwitchStringBug.java

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      javac exit with status 0 and compiled SwitchStringBug.class file.
      ACTUAL -
      javac exit with status 4 and no compiled SwitchStringBug.class file.

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      $ /usr/jdk/instances/jdk1.7.0/bin/javac SwitchStringBug.java
      An exception has occurred in the compiler (1.7.0). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
      java.lang.NullPointerException
              at com.sun.tools.javac.comp.Lower.visitStringSwitch(Lower.java:3456)
              at com.sun.tools.javac.comp.Lower.visitSwitch(Lower.java:3357)
              at com.sun.tools.javac.tree.JCTree$JCSwitch.accept(JCTree.java:959)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
              at com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:160)
              at com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3311)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:781)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
              at com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:160)
              at com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3311)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:781)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.comp.Lower.visitForLoop(Lower.java:3332)
              at com.sun.tools.javac.tree.JCTree$JCForLoop.accept(JCTree.java:872)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.comp.Lower.visitArrayForeachLoop(Lower.java:3196)
              at com.sun.tools.javac.comp.Lower.visitForeachLoop(Lower.java:3135)
              at com.sun.tools.javac.tree.JCTree$JCEnhancedForLoop.accept(JCTree.java:907)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
              at com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:160)
              at com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3311)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:781)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.tree.TreeTranslator.visitMethodDef(TreeTranslator.java:144)
              at com.sun.tools.javac.comp.Lower.visitMethodDefInternal(Lower.java:2619)
              at com.sun.tools.javac.comp.Lower.visitMethodDef(Lower.java:2538)
              at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:669)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2283)
              at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:591)
              at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
              at com.sun.tools.javac.comp.Lower.translate(Lower.java:2180)
              at com.sun.tools.javac.comp.Lower.translateTopLevelClass(Lower.java:3650)
              at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1393)
              at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1271)
              at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:870)
              at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:829)
              at com.sun.tools.javac.main.Main.compile(Main.java:417)
              at com.sun.tools.javac.main.Main.compile(Main.java:331)
              at com.sun.tools.javac.main.Main.compile(Main.java:322)
              at com.sun.tools.javac.Main.compile(Main.java:76)
              at com.sun.tools.javac.Main.main(Main.java:61)


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      public class SwitchStringBug extends Thread {
      public static void main(String[] args) {
              for (String arg : args) {
                      switch (arg) {
                      case ("a"):
                              System.err.println("A");
                              break;
                      }
              }
      }
      } /** End Class. */
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Use traditional "if/elseif/else" coding style.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                darcy Joe Darcy
                Reporter:
                webbuggrp Webbug Group
              • Votes:
                0 Vote for this issue
                Watchers:
                0 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: