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From: bangerth@ticam.utexas.edu To: gcc-gnats@gcc.gnu.org Subject: c++/8596: Base class template list not checked at point of declaration Date: Thu, 21 Nov 2002 18:41:00 -0000 [thread overview] Message-ID: <20021116012040.13676.qmail@sources.redhat.com> (raw) >Number: 8596 >Category: c++ >Synopsis: Base class template list not checked at point of declaration >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: accepts-illegal >Submitter-Id: net >Arrival-Date: Fri Nov 15 17:26:01 PST 2002 >Closed-Date: >Last-Modified: >Originator: Wolfgang Bangerth >Release: unknown-1.0 >Organization: >Environment: 3.3 CVS and 3.2.1 pre >Description: In playing with PR 3907, I found that this compiles: ------------------------------ template <int s> struct U {}; template <int s> struct C : U<zs_zs_zs>{}; ------------------------------ Is this supposed to work? I could not find anything in the standard, but I'm surprised it compiles cleanly. Of course I cannot instantiate C, since zs_zs_zs is not known. Further playing tells me that this has something to do with (the non-existence of)two-stage name lookup, since this compiles: -------------------------- template <int s> struct U {}; template <int s> struct C : U<zs_zs_zs>{}; const int zs_zs_zs = 3; C<1> c1; -------------------------- >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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