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* libstdc++/9964: filebuf::close() sometimes fails to close file.
@ 2003-03-05 12:56 peturr02
0 siblings, 0 replies; 2+ messages in thread
From: peturr02 @ 2003-03-05 12:56 UTC (permalink / raw)
To: gcc-gnats
>Number: 9964
>Category: libstdc++
>Synopsis: filebuf::close() sometimes fails to close file.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Mar 05 12:56:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: peturr02@ru.is
>Release: gcc-3.2.1
>Organization:
>Environment:
Red Hat Linux 8.0
>Description:
It seems that if the call to _M_really_overflow in filebuf::close() fails, then close() doesn't close the file and doesn't delete the buffer.
>How-To-Repeat:
See attachment.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/plain; name="closebug.cc"
Content-Disposition: inline; filename="closebug.cc"
#include <unistd.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fstream>
#undef NDEBUG
#include <cassert>
int main()
{
using namespace std;
signal(SIGPIPE, SIG_IGN);
unlink("xxx");
if (0 != mkfifo("xxx", S_IRWXU))
{
assert(false);
}
int fval = fork();
if (fval == -1)
{
unlink("xxx");
assert(false);
}
else if (fval == 0)
{
filebuf fbin;
fbin.open("xxx", ios_base::in);
sleep(1);
fbin.close();
exit(0);
}
filebuf fb;
fb.open("xxx", ios_base::out | ios_base::trunc);
assert(fb.is_open());
sleep(2);
fb.sputc('a');
filebuf* p = fb.close();
assert(!p);
assert(!fb.is_open());
return 0;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: libstdc++/9964: filebuf::close() sometimes fails to close file.
@ 2003-03-22 9:21 paolo
0 siblings, 0 replies; 2+ messages in thread
From: paolo @ 2003-03-22 9:21 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, peturr02
Synopsis: filebuf::close() sometimes fails to close file.
State-Changed-From-To: open->closed
State-Changed-By: paolo
State-Changed-When: Sat Mar 22 09:21:56 2003
State-Changed-Why:
Fixed for 3.3 and 3.4.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9964
^ permalink raw reply [flat|nested] 2+ messages in thread
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2003-03-05 12:56 libstdc++/9964: filebuf::close() sometimes fails to close file peturr02
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