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

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

[lerdsuwa]

Synopsis: inline friend in template class produces strange error msg

State-Changed-From-To: open->analyzed
State-Changed-By: lerdsuwa
State-Changed-When: Thu Oct  3 08:37:43 2002
State-Changed-Why:
    Confirmed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7638

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

[tkarkanis]

>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:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="ostream.cpp"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="ostream.cpp"

Y2xhc3Mgb3N0cmVhbTsKCnRlbXBsYXRlPHR5cGVuYW1lIEZsb2F0PgpjbGFzcyBDb21wbGV4CnsK
ICAgIGZyaWVuZCBvc3RyZWFtJiBvcGVyYXRvcjw8KCBvc3RyZWFtJiBvcywgY29uc3QgQ29tcGxl
eCYgYyApCiAgICAgICAgeyByZXR1cm4gb3M7IH0KICAgIAogICAgRmxvYXQgbV9yZSwgbV9pbTsK
cHVibGljOgogICAgCiAgICBDb21wbGV4JiBvcGVyYXRvcis9KCBDb21wbGV4ICk7Cn07CgoKdGVt
cGxhdGU8dHlwZW5hbWUgRmxvYXQ+CmlubGluZSBDb21wbGV4PEZsb2F0PiYKQ29tcGxleDxGbG9h
dD46Om9wZXJhdG9yKz0oIENvbXBsZXggYXJnICkKewogICAgcmV0dXJuICp0aGlzOwp9Cg==