This is the mail archive of the gcc-help@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Optimizing


* Kalle Olavi Niemitalo <kon@iki.fi> wrote:

> Although the second parameter is const void *, the language still
> allows the function to modify the object to which that points,
> provided that the object was not defined as const. 

Doesn't that defeat the whole purpose of const ?


BTW: let me add another question:


    const std::string str;

    void one(const std::string s)
    {
	str = s;
    }
    
    void two(const char* s)
    {
	one(s);
    }

    void three()
    {
	two("hello world");
    }


What actually happens here under the hood ? Is this reliable ?
(lifetime of the string object)


cu
-- 
----------------------------------------------------------------------
 Enrico Weigelt, metux IT service -- http://www.metux.de/

 phone:  +49 36207 519931  email: weigelt@metux.de
 mobile: +49 151 27565287  icq:   210169427         skype: nekrad666
----------------------------------------------------------------------
 Embedded-Linux / Portierung / Opensource-QM / Verteilte Systeme
----------------------------------------------------------------------


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]