c++/10437: "using namespace" at global scope creates incorrect code

[dean at foster dot net]

>Number:         10437
>Category:       c++
>Synopsis:       "using namespace" at global scope creates incorrect code
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 19 00:36:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     dean at foster dot net
>Release:        g++ 3.2.2
>Organization:
>Environment:
linux
>Description:
Code compiles differently if it looks like:

using namespace foo;
main()
{
  /* ... */
}

VS:

main()
{
  using namespace foo;
   /* ... */
}

My guess is that templates in the namespace foo are instantiated incorrectly.  I'm not totally possitive this is an error, but it seems like either an error in g++, or an error in the definition of how templates should be instantiated.

I cut the file down from several 1000 lines of code to under 400 lines.  I'm sorry that I haven't been able to reproduce it with fewer lines of code.  But if you look at the last 20 lines of code, I have flagged the troublesome statement.
>How-To-Repeat:
uncomment the line marked that is near the end of the file.
>Fix:
Not a clue!  
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="namespace_error.cc"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="namespace_error.cc"

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