libstdc++/7220: g++ 3.1: basic_istream::ignore(0,delimiter) issue.

libstdc++/7220: g++ 3.1: basic_istream::ignore(0,delimiter) issue.

[johnb]

>Number:         7220
>Category:       libstdc++
>Synopsis:       g++ 3.1: basic_istream::ignore(0,delimiter) issue.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 06 07:06:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     johnb@stl.sarov.ru
>Release:        g++ 3.1
>Organization:
>Environment:
Red Hat Linux release 7.2, g++ v3.1
>Description:
basic_istream::ignore(0,delimiter) extracts delimiter if it (delimiter) is at stream read position without regard to first parameter == 0. In case delimiter isn`t at read position ignore(0,delimiter) do nothing and this is correct.
C++ ISO|IEC 27.6.1.3-24 declare that ignore(n,...) should extract n symbols in case n  != numeric_limits<int>::max(). This condition is true for n = 0;
See testcase attached.
>How-To-Repeat:
Compile testcase with g++ 3.1 and run it. You`ll see some "failed" messages.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
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Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="ignore.cpp"

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Re: libstdc++/7220: g++ 3.1: basic_istream::ignore(0,delimiter) issue.

[bkoz]

Synopsis: g++ 3.1: basic_istream::ignore(0,delimiter) issue.

State-Changed-From-To: feedback->closed
State-Changed-By: bkoz
State-Changed-When: Sat Jul 27 14:57:29 2002
State-Changed-Why:
    Fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7220

Re: libstdc++/7220: g++ 3.1: basic_istream::ignore(0,delimiter) issue.

[bkoz]

Synopsis: g++ 3.1: basic_istream::ignore(0,delimiter) issue.

Responsible-Changed-From-To: unassigned->bkoz
Responsible-Changed-By: bkoz
Responsible-Changed-When: Thu Jul 25 16:24:03 2002
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: open->feedback
State-Changed-By: bkoz
State-Changed-When: Thu Jul 25 16:24:03 2002
State-Changed-Why:
    Fixed with
    
    2002-07-25  Benjamin Kosnik  <bkoz@redhat.com>
    
    	PR libstdc++/7220
    	* include/bits/istream.tcc (istream::ignore): Don't extract on
    	zero.
    	* testsuite/27_io/istream_unformatted.cc (test10): Add.
    

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7220