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From: "sebor at roguewave dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/36625] New: missing diagnostic on invalid __attribute__((aligned(N))) Date: Tue, 24 Jun 2008 23:43:00 -0000 [thread overview] Message-ID: <bug-36625-1186@http.gcc.gnu.org/bugzilla/> (raw) [-- Warning: decoded text below may be mangled, UTF-8 assumed --] [-- Attachment #1: Type: text/plain, Size: 1212 bytes --] I expected to see a diagnostic for the following program regardless of whether the template is instantiated or not, or whether the nested type is used or not. Gcc only diagnoses the attribute when the type is used. That said, rather than diagnosing it, it'd be even more useful to allow non type template parameters and other constant integral expressions as arguments to the attribute. $ cat t.cpp && g++ t.cpp && echo PASS && g++ -DUSE_IT t.cpp template <int N> struct A { struct S { short f[3]; } __attribute__ ((aligned (N))); }; int main () { A<123> a; #ifdef USE_IT A<123>::S s; #endif } PASS t.cpp: In instantiation of A<123>::S: t.cpp:10: instantiated from here t.cpp:3: error: N was not declared in this scope t.cpp:3: error: requested alignment is not a constant -- Summary: missing diagnostic on invalid __attribute__((aligned(N))) Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: sebor at roguewave dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36625
next reply other threads:[~2008-06-24 23:43 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-06-24 23:43 sebor at roguewave dot com [this message] 2008-06-24 23:48 ` [Bug c++/36625] " pinskia at gcc dot gnu dot org 2008-06-24 23:49 ` pinskia at gcc dot gnu dot org 2008-06-26 20:47 ` [Bug c++/36625] bogus error on __attribute__((aligned(N))) in template code sebor at roguewave dot com 2008-12-27 7:06 ` pinskia at gcc dot gnu dot org 2009-12-26 18:31 ` paolo dot carlini at oracle dot com 2009-12-26 19:13 ` paolo dot carlini at oracle dot com 2010-01-19 23:30 ` jason at gcc dot gnu dot org 2010-01-20 5:51 ` jason at gcc dot gnu dot org 2010-04-14 20:18 ` jason at gcc dot gnu dot org 2010-05-04 19:10 ` jason at gcc dot gnu dot org
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