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From "Greg Wolfe" <greg.wo...@MyPoints.com>
Subject RE: 'java' ant task not displaying debug info
Date Fri, 09 Apr 2004 00:37:18 GMT
Unfortunately this fix alone did not work for me.

I discovered that when I updated to ant 1.6.1 the problem
went away.  After further investigation I've determined that
there is a bug in the rpm (ant-1.5.2-23.i386.rpm) which RedHat
Enterprise Linux provides.

If I run under 'classic-ant' rather than 'ant' then ant version
1.5.2 works fine. I've filed a bug regarding this with RedHat:
  https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=120465

Thanks for your help,
-Greg Wolfe



--- Matt Benson wrote:

I removed the space in "lines, source" and then got
the line # info as desired.

-Matt

--- Greg Wolfe <greg.wolfe@MyPoints.com> wrote:
> Matt,
> 
> Your suggestion did not fix the problem.
> (Note: I assume that you actually meant
> 'add <sysproperty key="java.compiler" value="NONE"
> />
> to the java task')
> 
> Can you try running my example in your environment?
> It would be helpful to isolate whether this problem
> is general or specific to my environment.
> 
> (
> $ ant -version
> Apache Ant version 1.5.2-23 compiled on November 12
> 2003
> $ java -version
> java version "1.4.2_04"
> Java(TM) 2 Runtime Environment, Standard Edition
> (build 1.4.2_04-b04)
> Java HotSpot(TM) Client VM (build 1.4.2_04-b04,
> mixed mode)
> )
> 
> Thanks,
> -Greg Wolfe
> 
> 
> --- Matt Benson wrote:
> 
> I actually meant to respond to your first query...
> This is probably the JIT.  You're already forking
> the
> JVM, but try to add a <sysproperty
> name="java.compiler" value="NONE" />
> 
> -Matt
> 
> --- Greg Wolfe wrote:
> > I've posted on this before, but got no response so
> > I've devised a simple test case that demonstrates
> > the problem.
> > 
> > When I compile with the 'javac' task in ant with
> > 'debug' set to true, debug information is in the
> > class file which is produced.  I can verify this
> by
> > running 'java' from the command line.  However,
> when
> > I run the 'java' ant task, debug information is
> not
> > shown.  I'm running ant version 1.5.2-23
> > 
> > I would appreciate it if people can try out this
> > program and report if they get the same result.
> > 
> > Thanks,
> > -Greg Wolfe
> > 
> > ----
> > running from ant:
> > 
> > $ ant
> > Buildfile: build.xml
> >  
> > init:
> >     [mkdir] Created dir:
> > /home/gwolfe/msrc/emp/sample/build
> >  
> > build:
> >     [javac] Compiling 1 source file to
> > /home/gwolfe/msrc/emp/sample/build
> >  
> > run:
> >      [java] Example String
> >      [java] Exception in thread "main"
> > java.lang.Exception: This exception should log the
> > line number
> >      [java]    at Example.main(java.lang.String[])
> > (Unknown Source)
> >      [java] Java Result: 1
> >  
> > BUILD SUCCESSFUL
> > Total time: 0 seconds
> > 
> > 
> > ==> note the "Unknown Source" in the output.
> > 
> > running java from the commandline:
> > $ cd build; java Example; cd ..
> > Example String
> > Exception in thread "main" java.lang.Exception:
> This
> > exception should log the line number
> >         at Example.main(Example.java:15)
> > 
> > ==> note that debug information is available
> > 
> > 
> > ---
> > src/Example.java:
> > /**
> >  * Demo program to check if debug is enabled
> >  * @author Greg Wolfe
> >  */
> >                                                   
>  
> >                            
> > public class Example {
> >     public Example(String message) {
> >         this._message = message;
> >     }
> >                                                   
>  
> >                            
> >     public String getMessage() {
> >         return _message;
> >     }
> >     public static void main(String[] args) throws
> > Exception {
> >         System.out.println(new Example("Example
> > String").getMessage());
> >         throw new Exception("This exception should
> > log the line number");
> >     }
> >                                                   
>  
> >                            
> >     private String _message;
> > }
> >                                                   
>  
> >                            
> > 
> > build.xml:
> > <project name="CompileErrorDemo" default="run"
> > basedir=".">
> >   <description>
> >     Demonstrate the lack of debug information in a
> > case where it
> >     should be present.
> >   </description>
> >                                                   
>  
> >                                                   
>  
> >                           
> >   <!-- properties that should not be changed -->
> >                                                   
>  
> >                                                   
>  
> >                           
> >   <property name="src"        location="src"/>
> >   <property name="build"      location="build"/>
> >                                                   
>  
> >                                                   
>  
> >                           
> >   <target name="init">
> >     <mkdir dir="${build}"/>
> >   </target>
> >                                                   
>  
> >                                                   
>  
> >                           
> >   <target name="build" depends="init"
> > description="compile the source ">
> >     <javac debug="true" debuglevel="lines, source"
> > srcdir="${src}" destdir="${build}" >
> >       <src>
> >         <pathelement path="${src}" />
> >       </src>
> >     </javac>
> >   </target>
> >                                                   
>  
> >                                                   
>  
> >                           
> >   <target name="run" depends="build"
> >        description="run the compiled code">
> >     <java classname="Example" fork="true">
> >       <classpath>
> >         <pathelement path="${build}"/>
> >       </classpath>
> >     </java>
> >   </target>
> >                                                   
>  
> >                                                   
>  
> >                           
> >   <target name="clean" description="clean out the
> > output directories" >
> >     <delete dir="${build}"/>
> >   </target>





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