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Article View: gnu.g++.lib.bug
Article #418

strstream bug?

#418
From: Johan Garpendahl
Date: Tue, 05 Jan 1993 18:16
46 lines
1780 bytes
I'm not quite sure that this is a bug, it's rather a difference in how
cfront handles strstreams and how (lib)g++ handles strstreams. 

Here is an example:
////////////////////////////
#include <string.h>
#include <strstream.h>
#include <iostream.h>

char* str1="Now is the time for all good men ... 13:34:20 beep";

main()
{
    istrstream istr1(str1, strlen(str1) + 1);
    char buf[256];

    while(istr1 >> buf) cout << buf << " "; // Don't forget to say "beep"
    cout << endl;

    istrstream istr2(str1, strlen(str1) + 1);

    while(istr2.good()) { // Try again!
	istr2 >> buf;			  // That's better!
	cout << buf << " ";
    }
    cout << endl;
}
////////////////////////////

Compile with cfront and it prints the whole string twice.
Compile with (lib)g++ and it loses the "beep" the first time.

I can find good arguments for both behaviours.
Is it the program that is badly written?
Is there a definition of how it should work?

BTW, I last tried it with g++-2.3.3 and libg++-2.3.

Regards, 

	Johan
___________________________________________________________________________
Johan Garpendahl                   | Email: garp@isy.liu.se
Linkoping University               | Phone: +46 - 13 - 28 13 24
Dept. of Electrical Engineering    | Fax  : +46 - 13 - 13 92 82
S-581 83  LINKOPING // SWEDEN      | May the Source be with you.
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From: garp@isy.liu.se (Johan Garpendahl)
Subject: strstream bug?
Message-ID: <9301051616.AA04745@lin.isy.liu.se>
Sender: gnulists@ai.mit.edu
Organization: GNUs Not Usenet
Distribution: gnu
Date: Tue, 5 Jan 1993 18:16:47 GMT
Approved: bug-lib-g++@prep.ai.mit.edu
Lines: 48