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c++/5338: -pedantic reports ambiguous base
- From: Martin Dorey <martind at bluearc dot com>
- To: gcc-gnats at gcc dot gnu dot org, debian-gcc at lists dot debian dot org
- Date: Wed, 09 Jan 2002 21:22:21 +0000
- Subject: c++/5338: -pedantic reports ambiguous base
>Number: 5338
>Category: c++
>Synopsis: -pedantic reports ambiguous base
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: unassigned
>State: open
>Class: rejects-legal
>Submitter-Id: net
>Arrival-Date: Wed Jan 09 13:26:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:
>Release: 3.0.3 (Debian testing/unstable)
>Organization:
BlueArc
>Environment:
System: Linux trevithick 2.4.16 #2 Mon Dec 10 15:54:50 GMT 2001 i686 unknown
Architecture: i686
host: i386-pc-linux-gnu
build: i386-pc-linux-gnu
target: i386-pc-linux-gnu
configured with: ../src/configure -v --enable-languages=c,c++,java,f77,proto,objc --prefix=/usr --infodir=/share/info --mandir=/share/man --enable-shared --with-gnu-as --with-gnu-ld --with-system-zlib --enable-long-long --enable-nls --without-included-gettext --disable-checking --enable-threads=posix --enable-java-gc=boehm --with-cpp-install-dir=bin --enable-objc-gc i386-linux
>Description:
struct HwQueue
{
void pop ();
};
struct ISPmq : HwQueue
{
};
struct ISImq : HwQueue
{
};
struct IS : ISPmq, ISImq
{
void monk ();
};
void IS::monk()
{
ISPmq::pop();
}
$ gcc-3.0 -c -pedantic twosamebase.cpp
twosamebase.cpp: In member function `void IS::monk()':
twosamebase.cpp:21: `HwQueue' is an ambiguous base of `IS'
Without -pedantic there is not even a warning (even with -W -Wall).
10.2.1 says "for a qualified-id, name lookup begins in the scope of the nested-name-specifier". In which scope, I don't think the reference to pop() or HWQueue, for that matter, is ambiguous.
>How-To-Repeat:
>Fix:
Workaround: this->ISPmq::pop(); works fine.
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