Index: src/SymTab/Autogen.cc
===================================================================
--- src/SymTab/Autogen.cc	(revision 6fc5c14c6f831f36aaf4f6736da31f67985da917)
+++ src/SymTab/Autogen.cc	(revision 582ee2851d02bc30a951c8b62bf2576587e3ad25)
@@ -523,4 +523,5 @@
 			FunctionDecl * ctor = genFunc( "?{}", memCtorType->clone(), functionNesting );
 			ObjectDecl * srcParam = strict_dynamic_cast<ObjectDecl *>( ctor->type->parameters.back() );
+			srcParam->fixUniqueId();
 			ObjectDecl * dstParam = InitTweak::getParamThis( ctor->type );
 			makeMemberOp( srcParam, dstParam, back_inserter( ctor->statements->kids ) );