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From: Gabriel Dos Reis <gdr@integrable-solutions.net> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c++/9230: Friend definitions in template classes Date: Wed, 08 Jan 2003 19:06:00 -0000 [thread overview] Message-ID: <20030108190609.12427.qmail@sources.redhat.com> (raw) The following reply was made to PR c++/9230; it has been noted by GNATS. From: Gabriel Dos Reis <gdr@integrable-solutions.net> To: bangerth@ticam.utexas.edu Cc: gcc-gnats@gcc.gnu.org Subject: Re: c++/9230: Friend definitions in template classes Date: 08 Jan 2003 20:01:57 +0100 bangerth@ticam.utexas.edu writes: | 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(); } This is a bogus behaviour of g++ I came across from time to time. More generally, we have BIG problems in the current name-lookup implementation. | 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? No. There is no declaration of f() in the global scope. -- Gaby
next reply other threads:[~2003-01-08 19:06 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-01-08 19:06 Gabriel Dos Reis [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-04-29 20:03 bangerth 2003-01-08 19:37 bangerth 2003-01-08 19:16 Gabriel Dos Reis 2003-01-08 19:16 Gabriel Dos Reis 2003-01-08 17:26 Wolfgang Bangerth 2003-01-08 17:25 reichelt 2003-01-08 17:14 reichelt 2003-01-08 16:46 bangerth
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