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libstdc++/9562: ostream::sentry::operator bool () should be const
- From: sebor at roguewave dot com
- To: gcc-gnats at gcc dot gnu dot org
- Date: 4 Feb 2003 01:25:38 -0000
- Subject: libstdc++/9562: ostream::sentry::operator bool () should be const
- Reply-to: sebor at roguewave dot com
>Number: 9562
>Category: libstdc++
>Synopsis: ostream::sentry::operator bool () should be const
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Tue Feb 04 01:26:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: sebor@roguewave.com
>Release: 3.2.1
>Organization:
>Environment:
>Description:
27.6.1.1.2 p1 and p8 declare the function
std::ostream::sentry::operator bool () const;
libstdc++ declares it non-const, leading to compilation errors in programs such as the one below.
Regards
Martin
>How-To-Repeat:
$ cat t.cpp; g++ t.cpp -c
#include <ostream>
bool ok (std::ostream &strm)
{
const std::ostream::sentry sentry (strm);
return sentry;
}
t.cpp: In function `bool ok(std::ostream&)':
t.cpp:9: passing `const std::basic_ostream<char, std::char_traits<char>
>::sentry' as `this' argument of `std::basic_ostream<_CharT,
_Traits>::sentry::operator bool() [with _CharT = char, _Traits =
std::char_traits<char>]' discards qualifiers
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: