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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 15014] New: - ${build.sysclasspath} is ignored when there is no classpath set on <javac>
Date Tue, 03 Dec 2002 02:50:33 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=15014

${build.sysclasspath} is ignored when there is no classpath set on <javac>

           Summary: ${build.sysclasspath} is ignored when there is no
                    classpath set on <javac>
           Product: Ant
           Version: 1.5.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Core tasks
        AssignedTo: ant-dev@jakarta.apache.org
        ReportedBy: jesse.glick@netbeans.com


I am reporting this against 1.5.1 but actually I think the bug is much older.

Normally ${build.sysclasspath} works as documented. However if you have a
<javac> task with no classpath set at all (neither via attribute nor via nested
element), the behavior is as if the value 'last' (or 'only' or 'first') were
used, even if the property is in fact set to 'ignore'. Thus people who expect
-Dbuild.sysclasspath=ignore to protect them against unintended classpath
entries, will find that this does not work unless they give an *empty* classpath
for source trees which do not require anything other than the standard JRE
classes! This behavior is inconsistent, confusing, and maybe dangerous in some
situations.

Attaching a transcript of a test session. You can see that ant
empty-cp-build.syscp=ignore fails as you would expect, yet ant
no-cp-build.syscp=ignore mysteriously succeeds. After applying a patch to the
trunk version of DefaultCompilerAdapter (also attached), both of these fail as
expected.

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