c++/7638: inline friend in template class produces strange error msg

[tkarkanis@aw.sgi.com]

>Number:         7638
>Category:       c++
>Synopsis:       inline friend in template class produces strange error msg
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 19 14:06:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     tkarkanis@aw.sgi.com
>Release:        3.1
>Organization:
>Environment:
Red Hat Linux 7.3, IA32
>Description:
The compiler rejects the input in the attached file.  I'm
not sure that the input is legal (because it's kind of
strange to have an inline definition of a friend function
in a template class).  I assume it is legal because every
other compiler that I tried (IRIX, Solaris, HP-UX) accepts
the input.

Even if the input is correctly
rejected, the error message is incorrect because the friend
function is neither virtual nor abstract.

lnx-stdbld:~/tmp> g++3 -c ostream.cpp
ostream.cpp:19: cannot declare parameter `arg' to be of type `Complex<Float>'
ostream.cpp:19:   because the following virtual functions are abstract:
ostream.cpp:7:  ostream& operator<<(ostream&, const Complex<Float>&)
>How-To-Repeat:
g++3 -c ostream.cpp
>Fix:
A workaround is to take the friend function definition out
of the class definition.
>Release-Note:
>Audit-Trail:
>Unformatted:
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