Details

    • Subcomponent:
    • CPU:
      x86
    • OS:
      os_x

      Description

      FULL PRODUCT VERSION :
      java version "1.8.0_20"
      Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
      Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      OS X Version 10.9.5

      A DESCRIPTION OF THE PROBLEM :
      The compiler fails to compile a piece of valid Java code:

      Give the following Stream

      Stream<String> items = Arrays.asList("1","2","3","4","5").stream();

      The following line fails to compile:

      int res = items.reduce(0, (i,s) -> i + Integer.valueOf(s), (a,b) -> a + b);

      Whereas the following succeed:

      Integer res = items.reduce(0, (i,s) -> i + Integer.valueOf(s), (a,b) -> a + b);

      The error the compiler generates when using the primitive integer version is the following:



      REGRESSION. Last worked in version 8u11

      ADDITIONAL REGRESSION INFORMATION:
      java version "1.8.0_20"
      Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
      Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Simply try to compile this:

      Stream<String> items = Arrays.asList("1","2","3","4","5").stream();
      int res = items.reduce(0, (i,s) -> i + Integer.valueOf(s), (a,b) -> a + b);

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      It should compile without problems.
      ACTUAL -
      An exception has occurred in the compiler (1.8.0_25).

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      An exception has occurred in the compiler (1.8.0_25). 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.code.Types.isConvertible(Types.java:290)
      at com.sun.tools.javac.comp.Check.assertConvertible(Check.java:922)
      at com.sun.tools.javac.comp.Check.checkMethod(Check.java:876)
      at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3838)
      at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3615)
      at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3522)
      at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3501)
      at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3488)
      at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3370)
      at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
      at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
      at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1843)
      at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
      at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
      at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:649)
      at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1093)
      at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:852)
      at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
      at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:676)
      at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:692)
      at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1142)
      at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
      at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
      at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:676)
      at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1035)
      at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
      at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
      at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:676)
      at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4342)
      at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4252)
      at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4181)
      at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4156)
      at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
      at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
      at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
      at com.sun.tools.javac.main.Main.compile(Main.java:523)
      at com.sun.tools.javac.main.Main.compile(Main.java:381)
      at com.sun.tools.javac.main.Main.compile(Main.java:370)
      at com.sun.tools.javac.main.Main.compile(Main.java:361)
      at com.sun.tools.javac.Main.compile(Main.java:56)
      at com.sun.tools.javac.Main.main(Main.java:42)


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      public static void main(String[] args) {

          Stream<String> items = Arrays.asList("1","2","3","4","5").stream();

          int res = items.reduce(0, (i,s) -> i + Integer.valueOf(s), (a,b) -> a + b);
          System.out.println(res);

        }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      The workaround is to use wrapper objects.

      Stream<String> items = Arrays.asList("1","2","3","4","5").stream();
      Integer res = items.reduce(0, (i,s) -> i + Integer.valueOf(s), (a,b) -> a + b);


        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                webbuggrp Webbug Group
              • Votes:
                0 Vote for this issue
                Watchers:
                4 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: