c++/9726: namespace typedef hides global

[joerg.richter@pdv-fs.de]

>Number:         9726
>Category:       c++
>Synopsis:       namespace typedef hides global
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 17 16:06:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     joerg.richter@pdv-fs.de
>Release:        gcc3.2.1
>Organization:
>Environment:
i686-pc-linux-gnu
>Description:
compile following code and you will get the error at "foo a;" in main. 
-----------------
class foo
{};

namespace bar
{
typedef ::foo foo;
}

using namespace bar;

int main()
{
  foo a;     // `foo' undeclared (first use this function)
}
>How-To-Repeat:

>Fix:
replacing the "typedef" with an "using" solves the problem
>Release-Note:
>Audit-Trail:
>Unformatted: