[cfe-dev] Wrong lexical context

[Daniel Quiñones Lopez]

Hello, 
I'm making an operator that adds attributes of a base class into a derived one, hidding the base class attribute, but when i run it I get the following error:

IHI_operator: /home/daniel/llvm/tools/clang/lib/AST/DeclBase.cpp:1094: void clang::DeclContext::addHiddenDecl(clang::Decl*): Assertion `D->getLexicalDeclContext() == this && "Decl inserted into wrong lexical context"' failed.
Stack dump:
0.    <eof> parser at end of file


My code for the matcher is:

DeclarationMatcher IHI_Matcher = recordDecl(
                    isDerivedFrom(
                      recordDecl(
                    forEach(
                      fieldDecl(
                        anyOf(
                          isPublic(),
                          isProtected()
                        ),
                        unless(
                          hasType(
                        isConstQualified()
                          )
                        )
                      ).bind("ParentVar")
                    )
                      )
                    )
                  ).bind("ChildClass");

And this is the run function:

virtual void run(const MatchFinder::MatchResult &Result) {
        ASTContext *Context = Result.Context;
        Rewriter Rewrite;
        Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts());

        RecordDecl *FS;
        const FieldDecl *FS1;
        
          if ((FS = const_cast<RecordDecl*>(Result.Nodes.getNodeAs<clang::RecordDecl>("ChildClass")))
          && (FS1 = Result.Nodes.getNodeAs<clang::FieldDecl>("ParentVar"))){ 
                    
          FullSourceLoc FullLocation = Context->getFullLoc(FS->getLocStart());
          FullSourceLoc FullLocation1 = Context->getFullLoc(FS1->getLocStart());
        
          if ((FullLocation.isValid())){
            
                 
            FieldDecl* field = const_cast<FieldDecl*>(FS1);
            
            if (FS->hasAttrs()){
              for(RecordDecl::field_iterator i = FS->field_begin(); i != FS->field_end(); i++){
              if ((field->getName() != (*i)->getName()) && (field->getType() != (*i)->getType())){
                FS->dump();
                llvm::outs() << "Found declaration at "
                     << FullLocation1.getSpellingLineNumber() << ":"
                     << FullLocation1.getSpellingColumnNumber() << "\n";
                FS->addDecl(field);
                const RewriteBuffer *RewriteBuf = Rewrite.getRewriteBufferFor(FullLocation.getFileID());
                llvm::outs() << std::string(RewriteBuf->begin(), RewriteBuf->end());
              }
              }
            }
            else {
              FS->dump();
              llvm::outs() << "Found declaration at "
                   << FullLocation1.getSpellingLineNumber() << ":"
                   << FullLocation1.getSpellingColumnNumber() << "\n";
              FS->addDecl(field);
              const RewriteBuffer *RewriteBuf = Rewrite.getRewriteBufferFor(FullLocation.getFileID());
              llvm::outs() << std::string(RewriteBuf->begin(), RewriteBuf->end());
            }
          }
        }
  
  }
};

I'm not quite sure about what is happening here, can someone help me? Thank you.
 		 	   		  
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