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From: Wolfgang Bangerth <bangerth@ticam.utexas.edu> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c++/9558: subclass cannot find parent members without explicit "this->" in some cases Date: Tue, 04 Feb 2003 00:56:00 -0000 [thread overview] Message-ID: <20030204005601.27435.qmail@sources.redhat.com> (raw) The following reply was made to PR c++/9558; it has been noted by GNATS. From: Wolfgang Bangerth <bangerth@ticam.utexas.edu> To: "Ryan C. Gordon" <ryan@epicgames.com> Cc: gcc-bugs@gcc.gnu.org, <gcc-gnats@gcc.gnu.org> Subject: Re: c++/9558: subclass cannot find parent members without explicit "this->" in some cases Date: Mon, 3 Feb 2003 18:48:50 -0600 (CST) > Surely there's got to be some consideration for backwards compatibility, > if not real world issues? Just to prove my point about surprising behavior: ----------------------------------------------- #include <iostream> // --------- const int N = 2; // --------- template <typename T> struct A { // templated base class static const int N = 1; }; template <typename T> struct B : A<T> { B () { std::cout << "N=" << N << std::endl; } }; // --------- struct C { // non-templated base class static const int N = 1; }; template <typename T> struct D : C { D () { std::cout << "N=" << N << std::endl; } }; // --------- int main () { B<int> b; D<int> d; } --------------------------------------------- In each case, the question is: which N to take, the one from the base class, or the global one. Here are a couple of data points: gcc2.96: N=2 N=1 present gcc CVS: N=2 N=1 Intel icc7: N=1 N=1 Intel icc7 with -Xc -ansi: N=2 N=1 Compaq cxx: N=1 N=1 So, what is right and what is wrong? And what is the "real world" you quote? W. ------------------------------------------------------------------------- Wolfgang Bangerth email: bangerth@ticam.utexas.edu www: http://www.ticam.utexas.edu/~bangerth/
next reply other threads:[~2003-02-04 0:56 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-02-04 0:56 Wolfgang Bangerth [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-02-04 2:46 Wolfgang Bangerth 2003-02-04 2:36 Ryan C. Gordon 2003-02-04 0:26 Wolfgang Bangerth 2003-02-03 23:45 bangerth 2003-02-03 23:36 ryan
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