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c++/5421: GCC 3.0 Issues ICE on explicit template member function friendship

From: ajl13 at bellatlantic dot net
To: gcc-gnats at gcc dot gnu dot org
Cc: a dot liguori at wowis dot com
Date: 18 Jan 2002 04:04:09 -0000
Subject: c++/5421: GCC 3.0 Issues ICE on explicit template member function friendship
Reply-to: ajl13 at bellatlantic dot net


>Number:         5421
>Category:       c++
>Synopsis:       GCC 3.0 Issues ICE on explicit template member function friendship
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 17 20:06:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Anthony Liguori
>Release:        GCC 3.0.0
>Organization:
>Environment:
Linux 2.4.7-10 #1 i686
AMD Athlon
>Description:
GCC generates an interal compiler error when declaring an explict template member function of class B as a friend of class A.  GCC correctly handles a non-explicit template member function friendship though.  It also correctly handles an explicit template function friendship.
>How-To-Repeat:
The tarball includes a sample 5 line snippet that will reproduce the ICE along with the generated .ii file and then output from the ICE.  It requires no #include files so the .ii is the same as the .C file (I've included the .ii anyway).

The command line used to attempt to compile the snippet is:

$ gcc -v -save-temps -g -c -Wall template_friend.C
>Fix:
There is no workaround other than making the friendship no longer required by making the private members public.  This is obviously not an acceptable workaround though for most cases.
>Release-Note:
>Audit-Trail:
>Unformatted:
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Content-Disposition: attachment; filename="g++-bug_x_tmplt_frnd.tgz"

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