c++/8891: Unexplicit error message about naming conflict

[benoit.sibaud@rd.francetelecom.com]

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>Number:         8891
>Category:       c++
>Synopsis:       Unexplicit error message about naming conflict
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 10 06:36:04 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Benoît Sibaud
>Release:        gcc-3.2.1
>Organization:
>Environment:
Debian Sarge i686-pc-linux-gnu
>Description:
class Foo
{
protected:
    enum {BadName, A, B, C};
};
class BadName : public Foo
{
};
class Toto : public Foo
{
 public:
    Foo* fct() { return new BadName; }
};

$ g++ -Wall foo.cpp
foo.cpp: In member function `Foo* Toto::fct()':
foo.cpp:18: parse error before `;' token
foo.cpp:18: warning: no return statement in function returning non-void

Conflict between ::BadName and BadName in Foo enum. The error message is not really helpful (the enum was deeply hidden in a class hierarchy in my case).
Tested with several 2.95.2, 3.0.x, 3.1.x and 3.2.x versions.
>How-To-Repeat:

>Fix:

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