c++/6548: Incorrect mangling for extern C and namespace

[sdouglass@arm.com]

>Number:         6548
>Category:       c++
>Synopsis:       Incorrect mangling for extern C and namespace
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 03 07:56:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Scott Douglass
>Release:        gcc-3.0.4 and later (still present in trunk)
>Organization:
>Environment:
All
>Description:
Neither N::x' nor 'N::y' should be mangled in the example
below but 'N::x' does get mangled.  The work-around is to use
the variable in a non-inline function as is done with 'N::y'.

This example works in 2.95.2, because the namespace is never
mangled by 2.95.2.
>How-To-Repeat:
Compile the following code:

extern "C" {
  namespace N { extern int x,y;}
}

int N::x = 42; // I'm incorrectly mangled

int f() { return N::y; }

int N::y = 43; // I'm correctly not mangled
>Fix:
Unknown
>Release-Note:
>Audit-Trail:
>Unformatted: