Re: c++/6229: gcc 3.1 namespace lookup seems to fail

Re: c++/6229: gcc 3.1 namespace lookup seems to fail

[Jason Merrill]

The following reply was made to PR c++/6229; it has been noted by GNATS.

From: Jason Merrill <jason@redhat.com>
To: "Peter Klotz" <peter.klotz@aon.at>
Cc: <gcc-gnats@gcc.gnu.org>
Subject: Re: c++/6229: gcc 3.1 namespace lookup seems to fail
Date: Wed, 10 Apr 2002 12:30:50 +0100

 >>>>> "Peter" == Peter Klotz <peter.klotz@aon.at> writes:
 
 > A final question remains: Why is the operator<< that takes a bool considered
 > the best match for my function pointer (why not, for example, the one taking
 > an int)?
 
 Because there is a standard conversion from any pointer to bool, but not to
 int.
 
 Jason

c++/6229: gcc 3.1 namespace lookup seems to fail

[peter.klotz]

>Number:         6229
>Category:       c++
>Synopsis:       gcc 3.1 namespace lookup seems to fail
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 08 07:26:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     peter.klotz@aon.at
>Release:        gcc 3.1 Snapshot
>Organization:
>Environment:
Red Hat Linux 7.2 / i386
>Description:
Uncomment '#define TWO_INSERTERS' in the attached program and everything compiles and runs fine ('manipulator called' is written twice as output).

If the program is compiled as is one obtains the warning

manipulator.cpp: In function `void ns::f()':
manipulator.cpp:29: warning: the address of `void
   ns::manipulator(std::ostringstream&)', will always be `true'

The program writes 'manipulator called' only once.

Obviously a wrong inserter gets called, simply by adding an inserter with a non matching signature.

Neither gcc 2.95.3, Borland C++ 5.5.1 nor Comeau 4.3Beta show this behavior.

I have already reported this issue to Red Hat since it is their gcc 3.1-0.23.1 snapshot I am using but got no answer so far.
>How-To-Repeat:
g++ -W -Wall manipulator.cpp -o manipulator
./manipulator
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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