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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.redhat.com/browse/WELD" style="color: #3b73af; text-decoration: none">Weld</a> / <a href="https://issues.redhat.com/browse/WELD-2620" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-fe0de629-a803-4c78-9562-f9b058e7b91d" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://issues.redhat.com/browse/WELD-2620" style="color: #3b73af; text-decoration: none">WELD-2620</a> </td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.redhat.com/browse/WELD-2620" style="color: #3b73af; text-decoration: none">ClassFileUtils.makeClassLoaderMethodsAccessible() wrong implementation</a> </span> </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="pasha_turok" id="email_pasha_turok" href="https://issues.redhat.com/secure/ViewProfile.jspa?name=pasha_turok" style="color:#0066cc;; color: #3b73af; text-decoration: none">Pavel K</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <span class="diffcontext">I know that Weld currently not supports JPMS. However, I use it as a JPMS module and everything worked fine with JDK 11. However, in JDK12+ I started to get <br><br>{code:java}<br>Caused by: java.lang.reflect.InaccessibleObjectException: <br>Unable to make protected final java.lang.Class <br>java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)<br>throws java.lang.ClassFormatError accessible: module java.base does <br>not "opens java.lang" to module weld.servlet.shaded.<br>{code}<br><br>Firstly I thought that the problem was in JPMS and asked a question on StackOverflow [here|https://stackoverflow.com/questions/60918134/jpms-add-opens-doesnt-work-for-java-lang-reflect-inaccessibleobjectexception].<br><br>Later it became clear that the problem is with implementation of ClassFileUtils.makeClassLoaderMethodsAccessible(). <br><br>Alan Bateman who is a JPMS specialist asked to fire a bug and gave the following comment:<br><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">bq.</span> <span class="diffaddedchars" style="background-color:#ddfade;">"</span> <span class="diffcontext"> The AccessibleObject.override field is a private field that is highly security sensitive. It is hidden from core reflection in recent JDK releases so I think this explains why you see a difference. That said, the maintainers of ClassUtils should not be hacking into this private field and setting it with Unsafe. It is unsupportable to be hacking into private fields like this. If the use-case is injecting a class into the same run-time package as another class then they should use Lookup.defineClass.</span> <span class="diffaddedchars" style="background-color:#ddfade;">"</span> <span class="diffcontext"><br><br><br><br></span> </td>
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