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* Re: libstdc++/10096: Input impossible with basic_filebuf with custom traits type.
@ 2003-05-16 20:00 bkoz
0 siblings, 0 replies; 3+ messages in thread
From: bkoz @ 2003-05-16 20:00 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, peturr02
Synopsis: Input impossible with basic_filebuf with custom traits type.
State-Changed-From-To: analyzed->feedback
State-Changed-By: bkoz
State-Changed-When: Fri May 16 20:00:02 2003
State-Changed-Why:
This is fixed on mainline, but not on the 3.3.x branch. Should this
just be closed?
-benjamin
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10096
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: libstdc++/10096: Input impossible with basic_filebuf with custom traits type.
@ 2003-03-15 14:06 paolo
0 siblings, 0 replies; 3+ messages in thread
From: paolo @ 2003-03-15 14:06 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, peturr02
Synopsis: Input impossible with basic_filebuf with custom traits type.
State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Sat Mar 15 14:06:49 2003
State-Changed-Why:
Confirmed but well known problem: a generic underflow() is
missing (see std_fstream.h around line 476).
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10096
^ permalink raw reply [flat|nested] 3+ messages in thread
* libstdc++/10096: Input impossible with basic_filebuf with custom traits type.
@ 2003-03-15 10:56 peturr02
0 siblings, 0 replies; 3+ messages in thread
From: peturr02 @ 2003-03-15 10:56 UTC (permalink / raw)
To: gcc-gnats
>Number: 10096
>Category: libstdc++
>Synopsis: Input impossible with basic_filebuf with custom traits type.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Mar 15 10:56:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: peturr02@ru.is
>Release: gcc mainline from 20030312
>Organization:
>Environment:
Red Hat Linux 8.0
>Description:
basic_filebuf<CharT, Traits>::sbumpc() returns an endless stream of zeros when Traits is a user-defined traits class. This happens both when the file is closed and when it is open.
>How-To-Repeat:
See attachment.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/plain; name="instbug2.cc"
Content-Disposition: inline; filename="instbug2.cc"
#include <fstream>
#include <cstring>
#undef NDEBUG
#include <cassert>
class MyTraits : public std::char_traits<char>
{
};
int main()
{
using namespace std;
const char* name = "tmp";
const char* strlit = "The Grand Wazoo";
streamsize len = strlen(strlit);
filebuf fbout;
fbout.open(name, ios_base::out | ios_base::trunc);
fbout.sputn(strlit, len);
fbout.close();
char buf[1024];
basic_filebuf<char, MyTraits> fb;
assert(fb.sgetc() == MyTraits::eof());
fb.open("instbug2.cc", ios_base::in);
assert(fb.is_open());
assert(fb.sgetc() != MyTraits::eof());
streamsize n = fb.sgetn(buf, sizeof(buf));
assert(n == len);
assert(!memcmp(buf, strlit, len));
fb.close();
assert(!fb.is_open());
assert(fb.sgetc() == MyTraits::eof());
return 0;
}
^ permalink raw reply [flat|nested] 3+ messages in thread
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2003-05-16 20:00 libstdc++/10096: Input impossible with basic_filebuf with custom traits type bkoz
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2003-03-15 14:06 paolo
2003-03-15 10:56 peturr02
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