From:	Damon Hogan <damonh AT pgmincorporated DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Looks like GCC 2.95 bug
Date:	Wed, 22 Dec 1999 18:46:33 -0700
Organization:	XMission http://www.xmission.com/
Lines:	79
Message-ID:	<38617EF9.6CBA7C24@pgmincorporated.com>
References:	<83b5qf$k5i$1 AT news DOT itfs DOT nsk DOT su>
NNTP-Posting-Host:	mail.pgmincorporated.com
Mime-Version:	1.0
X-Trace:	news.xmission.com 945913604 19593 166.70.119.101 (23 Dec 1999 01:46:44 GMT)
X-Complaints-To:	abuse AT xmission DOT com
NNTP-Posting-Date:	23 Dec 1999 01:46:44 GMT
X-Mailer:	Mozilla 4.6 [en] (Win98; I)
X-Accept-Language:	en
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Well myself I use a string class include file & library which I mody to my hearts
content to handle this situation.  Using shrink and grow STring data type.
If you are interested in the source let me know.

#include <myString.H>

int main(void)
{
  STring bob;
  bob = "Does bob like candy?";
  bob = "No.";
  bob = "Bob must be crasy\n";
  cout << bob;

}

End result is that the bob instance of the STring class data type allocates enough

memory to fit the new string each time the value is set and throws away the old
memory location to be used for something else.

Program prints

Bob must be crazy


"Michael N. Filippov" wrote:

> Hello !
> I'm not sure it is the right place to ask - but it is the only C/C++
> conference i read, sorry.
>
> The question is: is this code correct according to the latest C++ standards :)
> and difference between commented part and last func() call.
>
> idisys:/usr1/users/michael/tmp$ cat const.cpp
> #include <stdio.h>
>
> void    func(char* s)
> {
>   printf("func(%s)\n", s);
> }
>
> int  main(void)
> {
>   char  *p = "Test string";     // NULL;
> //  if ( p == NULL )
> //    func("");
> //  else
> //    func(p);
>   func( ( p == NULL ) ? "" : p );
>   return 0;
> }
>
> The problem is:
> idisys:/usr1/users/michael/tmp$ gcc const.cpp
> const.cpp: In function  nt main()':
> const.cpp:15: passing onst char *' as argument 1 of unc(char *)' discards
>  qualifiers
> idisys:/usr1/users/michael/tmp$ gcc -v
> Reading specs from /usr/lib/gcc-lib/i586-ksi-linux/2.95/specs
> gcc version 2.95 19990728 (release)
>
> Moreover I can compile it w/out problems
> woland:~/tmp$ gcc const.cpp
> woland:~/tmp$ gcc -v
> gcc version 2.7.2.1
>
> and
> [michael AT sig tmp]$ gcc const.cpp
> [michael AT sig tmp]$ gcc -v
> Reading specs from /usr/lib/gcc-lib/i586-ksi-linux/egcs-2.91.66/specs
> gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
>
> All the same with DJGPP.
>
> Sincerely,
> Michael

- Raw text -