An internal error occurred during: "C/C++ Indexer"
For some reasons eclipse starts showing me this message recently and after that auto-completing and intellisense stop working
An internal error occurred during: "C/C++ Indexer". tried to access method java.lang.Object.clone()Ljava/lang/Object; from class org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.SemanticUtil
I searched a lot but with no value!
Generally changing params Xms and Xmx to something like:
-Xms2048m
-Xmx2048m
in eclipse.ini file should fix it