GenModuleInfoSource build tool that augments module-info.java with platform-specific exports/provides/etc, if any, under gensrc directory. The build tool didn't catch trailing semi-colon but generates a proper module-info.java that passes the compilation.

To reproduce it, add the following to java.base module-info.java:

+ exports sun.security.util.math to jdk.crypto.ec

compilation succeeds but javadoc fails.