Problems reported:

parser/error_recovery/bracket_mismatch_06:2:9: Expected an identifier, but got ';'.
  new C(;
        ^

parser/error_recovery/bracket_mismatch_06:2:8: Can't find ')' to match '('.
  new C(;
       ^

beginCompilationUnit(main)
  beginMetadataStar(main)
  endMetadataStar(0)
  beginTopLevelMember(main)
    beginTopLevelMethod(UnmatchedToken((), null)
      handleNoType(UnmatchedToken(())
      handleIdentifier(main, topLevelFunctionDeclaration)
      handleNoTypeVariables(()
      beginFormalParameters((, MemberKind.TopLevelMethod)
      endFormalParameters(0, (, ), MemberKind.TopLevelMethod)
      handleAsyncModifier(null, null)
      beginBlockFunctionBody({)
        beginNewExpression(new)
          handleIdentifier(C, constructorReference)
          beginConstructorReference(C)
            handleNoTypeArguments(()
            handleNoConstructorReferenceContinuationAfterTypeArguments(()
          endConstructorReference(C, null, (, ConstructorReferenceContext.New)
          beginArguments(()
            handleRecoverableError(Message[ExpectedIdentifier, Expected an identifier, but got ';'., Try inserting an identifier before ';'., {lexeme: ;}], ;, ;)
            handleIdentifier(, expression)
            handleNoTypeArguments(;)
            handleNoArguments(;)
            handleSend(, ;)
          endArguments(1, (, ))
        endNewExpression(new)
        handleExpressionStatement(;)
      endBlockFunctionBody(1, {, })
    endTopLevelMethod(main, null, })
  endTopLevelDeclaration()
  handleErrorToken(UnmatchedToken(())
  handleRecoverableError(Message[UnmatchedToken, Can't find ')' to match '('., null, {string: ), lexeme: (}], UnmatchedToken((), UnmatchedToken(())
endCompilationUnit(1, )