Hi, I have a repeatable failure with Photon / m2e / wtp projects. I'm not sure it is related with m2e, but as I think it is highly related with the way project's build path is configured, your insight may be important. Also I found no report about this issue, so I think it is not an issue for vanilla Eclipse project.
TLDR; Inspect and Debug shell is impossible in dependencies in a WTP Tomcat Server with Photon (Unable to evaluate the selected expression). It used to work with Oxygen. I find a workaround, but this bug is really annoying. Only Debug Server is buggy ; a Debug as... Junit test works fine. This bug can be reproduced following this steps : * download jee package for eclipse photon (buildid 20180619-1200, eclipse m2e 1.9.0.20180606-2036, eclipse m2e wtp 1.4.0.20180606-2005) * clone this repository : https://github.com/lalmeras/eclipse-photon-inspect-bug.git (very minimal use-case) * with Git Perspective, add the git repository and import the selected project. Maven nature is detected automatically * create a Tomcat 9.0 Server and add the test webapp * Debug Tomcat server * put a breakpoint on TestServlet.doGet * visit http://localhost:8080/test * step in StringUtils.isAllBlank(...) * perform an inspect or debug-shell on "ArrayUtils.isEmpty(css)" * it fails with "Unable to evaluate the selected expression" A known workaround for this is : * click on the stacktrace in debug view * right-click -> Edit source lookup * tick Search for duplicate source -> apply * choose StringUtils.class in the list (opposed to org/apache/commons/...) * inspect/debug-shell is working again ; but this process must be done for all class you want to debug Do you reproduce this issue ? Do you think it is m2e related (the way maven project is configured) or wtp related ? How can I help to fix this issue ? Thanks, Laurent Almeras
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