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From: bangerth@ticam.utexas.edu To: gcc-gnats@gcc.gnu.org Subject: c++/9230: Friend definitions in template classes Date: Wed, 08 Jan 2003 16:46:00 -0000 [thread overview] Message-ID: <20030108164007.26379.qmail@sources.redhat.com> (raw) >Number: 9230 >Category: c++ >Synopsis: Friend definitions in template classes >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Wed Jan 08 08:46:07 PST 2003 >Closed-Date: >Last-Modified: >Originator: Wolfgang Bangerth >Release: unknown-1.0 >Organization: >Environment: all versions of gcc >Description: I'm not sure about this one: -------------------------- template <class T> class X { friend void f () {}; }; void g() { f(); } -------------------------- This yields: h.cc: In function `void g()': h.cc:5: error: `f' undeclared (first use this function) h.cc:5: error: (Each undeclared identifier is reported only once for each function it appears in.) On the other hand, this compiles cleanly: -------------------------- template <class T> class X { friend void f () {}; }; template class X<int>; void g() { f(); } -------------------------- In other words, the function f() is injected into the global namespace only upon the first instantiation of the template class X. Is this the way it is supposed to be? W. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2003-01-08 16:46 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-01-08 16:46 bangerth [this message] 2003-01-08 17:14 reichelt 2003-01-08 17:25 reichelt 2003-01-08 17:26 Wolfgang Bangerth 2003-01-08 19:06 Gabriel Dos Reis 2003-01-08 19:16 Gabriel Dos Reis 2003-01-08 19:16 Gabriel Dos Reis 2003-01-08 19:37 bangerth 2003-04-29 20:03 bangerth
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