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  1. Code Tools
  2. CODETOOLS-7900345

Template Generator breaks on invalid class files

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    • Subcomponent:
    • Resolved In Build:
      1.2
    • CPU:
      generic
    • OS:
      generic
    • Verification:
      Verified

      Description



      Name: dkR10031 Date: 07/15/2003



      Current implementation of the Template Generator stops processing
      of the class files if it meets empty class file. All gathered
      from the correct class files coverage data is lost.

      Such behavior of the Template Generator is incorrect since it user can't
      process directories and jar files which contains files with '.class'
      extensions and these files are not class files (current edition
      of the Jcov User Guide does not prohibit it).

      To reproduce the bug please execute the test below. This test
      compiles the sources with jcov support, creates empty class file
      'empty.class', executes Template Generator, and finally dumps java.jcov
      file to show that coverage data is lost:

      -------------------------- test.java begin ---------------------------
      public class test {

          public static void main(String[] args) {

              System.out.println("-----------");
              System.exit(0);
          }
      }
      -------------------------- test.java end -----------------------------
      -------------------------- script begin ------------------------------
      uname -a
      export JCOV_JAR=/export/home/gary/QA.JCOV/ws-control/test.linux-x86/lib/jcov.jar
      export TESTED_JAVA=/net/novo172/export/home/java/dest/jdk1.4.0-b92/linux-i386/bin/java
      export TESTED_JAVAC=/net/novo172/export/home/java/dest/jdk1.4.0-b92/linux-i386/bin/javac
      export CLASS_TPLGEN=com.sun.tdk.jcov.TmplGenMain
      export CLASS_SINSTR=com.sun.tdk.jcov.InstrMain

      CLASSPATH=${JCOV_JAR}
      CLASSPATH=${CLASSPATH}:.
      export CLASSPATH

      # Compile the test program
      $TESTED_JAVAC -Xjcov test.java
      touch empty.class

      # Execute the Template Generator with the -output option
      $TESTED_JAVA -showversion $CLASS_TPLGEN -dtype=M -verbose -classpath=.
      echo "---- java.jcov begin ----"
      cat java.jcov
      echo "---- java.jcov end ------"
      -------------------------- script end --------------------------------
      -------------------------- script output begin -----------------------
      Linux linux-11 2.4.18-14 #1 Wed Sep 4 13:35:50 EDT 2002 i686 i686 i386
      GNU/Linux
      java version "1.4.0"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
      Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

      Type of jcov data is: M
      processing class: test
      processing class: empty
      *** Fatal error : Unexpected end of class file :null
      *** Exiting...
      ---- java.jcov begin ----
      JCOV-DATA-FILE-VERSION: 2.0
      ---- java.jcov end ------
      -------------------------- script output end -------------------------
      ======================================================================

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              Assignee:
              lmesnik Leonid Mesnik
              Reporter:
              klooney Kevin Looney (Inactive)
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