c++/3333: Using declaration doesn't work with classes.

[aroach at stoic dot electriceyeball dot com]

>Number:         3333
>Category:       c++
>Synopsis:       Using declaration doesn't work with classes.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 21 08:46:02 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Anthony Roach
>Release:        3.0
>Organization:
>Environment:
System: Linux stoic 2.2.19 #1 Thu Apr 5 15:18:02 EST 2001 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc-3.0/configure --prefix=/usr/local/opt/gcc-3.0
>Description:
Using declaration should be usable for classes as well as namespaces in
most cases, but GCC restricts most uses to namespaces.
>How-To-Repeat:
source that produces the bug:
// BEGIN: usingBug.cpp
class A
{
public:
	class B
	{

	};
};

using A::B;

int main()
{
	B b;

	return 0;
}
// END: usingBug.cpp

to compine: gcc usingBug.cpp

gcc output:
usingBug.cpp:11: `A' is not a namespace
usingBug.cpp: In function `int main()':
usingBug.cpp:15: `B' undeclared (first use this function)
usingBug.cpp:15: (Each undeclared identifier is reported only once for each
   function it appears in.)
usingBug.cpp:15: parse error before `;' token


>Fix:
work around:
// BEGIN: usingFixed.cpp
class A
{
public:
	class B
	{

	};
};

int main()
{
	A::B b;

	return 0;
}
// END: usingFixed.cpp

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