Eclipse compiler used commons.compiler causes "Illegal type in constant pool"
with enums
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Key: SLING-1809
URL: https://issues.apache.org/jira/browse/SLING-1809
Project: Sling
Issue Type: Bug
Components: Commons
Affects Versions: Commons Compiler 2.0.0
Reporter: Bertrand Delacretaz
According to [0] the eclipse compiler can't handle enums in certain
environments.
The trunk org.apache.sling.commons.compiler bundle embeds (eclipse-jdt)
core-3.3.0-v_771.jar which exposes this issue.
According to [0] the issue should be fixed in v3.5.2, but the central Maven
repository does not provide a more recent version than the one we currently use.
To reproduce the problem, install the compiler and java scripting bundle and
create a scripted java servlet that uses enums (example below), at runtime this
causes:
java.lang.VerifyError:
(class: enumtest/EnumTest, method: valueOf signature:
(Ljava/lang/String;)Lenumtest/EnumTest;)
Illegal type in constant pool
[0] https://bugs.eclipse.org/bugs/show_bug.cgi?id=291985
Here's the example servlet, store in
/apps/JavaScriptingTest2/JavaScriptingTest2.java and use "JavaScriptingTest2"
resource type:
package apps.JavaScriptingTest2;
import javax.servlet.http.*;
import java.io.IOException;
public class JavaScriptingTest2 extends HttpServlet {
static enum EnumTest { FOO, BAR };
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws
IOException {
resp.getWriter().write("FOO=" + EnumTest.FOO);
}
}
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