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From: "austern at apple dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/14639] New: Incorrect emission of unused compiler-generated destructor at -O2 Date: Thu, 18 Mar 2004 20:46:00 -0000 [thread overview] Message-ID: <20040318204634.14639.austern@apple.com> (raw) Consider the following file: class AAA { public: virtual ~AAA(); }; class BBB { public: virtual ~BBB(); }; class xyz : public AAA, public BBB { public: xyz() : AAA(), BBB() { } }; Class xyz has no key method, so its vtable should be emitted only in translation units where it's used. With "gcc -O0 -c foo.cc" I get what I expect: the compiler doesn't emit _ZTV3xyz, _ZN3xyzD0Ev, or anything else. With "gcc -O2 -c foo.cc" I get incorrect behavior: the compiler emits xyz's destructor and vtable, thunks, and all of the things in AAA and BBB that are required to support them. This is a regression. In 3.2.2, O0 and O2 both behave correctly. -- Summary: Incorrect emission of unused compiler-generated destructor at -O2 Product: gcc Version: 3.5.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: austern at apple dot com CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14639
next reply other threads:[~2004-03-18 20:46 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-03-18 20:46 austern at apple dot com [this message] 2004-03-19 1:33 ` [Bug c++/14639] [3.4/3.5 Regression] [unit-at-a-time] " pinskia at gcc dot gnu dot org 2004-03-19 2:27 ` mmitchel at gcc dot gnu dot org 2004-03-19 4:02 ` austern at apple dot com 2004-03-19 4:44 ` mark at codesourcery dot com 2004-03-21 18:26 ` [Bug c++/14639] New: " Jan Hubicka 2004-03-21 19:25 ` Mark Mitchell 2004-03-22 9:44 ` Jan Hubicka 2004-03-22 15:31 ` Mark Mitchell 2004-03-23 9:52 ` Jan Hubicka 2004-03-21 18:26 ` [Bug c++/14639] [3.4/3.5 Regression] [unit-at-a-time] " hubicka at ucw dot cz 2004-03-21 19:25 ` mark at codesourcery dot com 2004-03-21 23:33 ` steven at gcc dot gnu dot org 2004-03-22 9:44 ` jh at suse dot cz 2004-03-22 15:32 ` mark at codesourcery dot com 2004-03-23 9:52 ` jh at suse dot cz 2004-03-23 21:25 ` mark at codesourcery dot com 2004-03-23 21:26 ` mmitchel at gcc dot gnu dot org 2004-03-23 21:26 ` mmitchel at gcc dot gnu dot org 2004-03-24 18:23 ` hubicka at ucw dot cz 2004-03-24 18:44 ` mark at codesourcery dot com 2004-03-24 23:51 ` hubicka at ucw dot cz 2004-03-26 8:23 ` mark at codesourcery dot com 2004-03-26 10:01 ` hubicka at ucw dot cz 2004-03-28 15:42 ` cvs-commit at gcc dot gnu dot org 2004-03-30 13:46 ` [Bug c++/14639] [3.5 " pinskia at gcc dot gnu dot org 2004-06-03 23:27 ` bowdidge at apple dot com 2004-06-03 23:33 ` pinskia at gcc dot gnu dot org 2004-06-03 23:35 ` pinskia at gcc dot gnu dot org 2004-06-03 23:38 ` mark at codesourcery dot com 2004-06-03 23:38 ` bowdidge at apple dot com 2004-06-03 23:45 ` cvs-commit at gcc dot gnu dot org 2004-06-03 23:46 ` pinskia at gcc dot gnu dot org 2004-06-04 0:37 ` bowdidge at apple dot com 2004-06-04 0:38 ` bowdidge at apple dot com 2004-06-04 0:40 ` pinskia at gcc dot gnu dot org 2004-06-04 0:50 ` [Bug c++/14639] [3.5 Regression] [non-unit-at-a-time] " pinskia at gcc dot gnu dot org 2004-06-04 0:58 ` [Bug c++/14639] [3.5 Regression] [non-unit-at-a-time] Incorrect emission of unused compiler-generated destructor bowdidge at apple dot com 2004-06-04 1:09 ` pinskia at gcc dot gnu dot org 2004-06-04 1:50 ` pinskia at gcc dot gnu dot org 2004-06-04 2:12 ` bowdidge at apple dot com 2004-06-04 2:19 ` pinskia at gcc dot gnu dot org 2004-06-04 2:20 ` pinskia at gcc dot gnu dot org 2004-06-04 2:47 ` pinskia at gcc dot gnu dot org 2004-06-04 3:45 ` bowdidge at apple dot com 2004-06-04 4:53 ` bowdidge at apple dot com 2004-06-04 4:58 ` pinskia at gcc dot gnu dot org 2004-06-04 19:13 ` bowdidge at apple dot com 2004-06-04 21:04 ` hubicka at ucw dot cz 2004-06-04 21:11 ` hubicka at ucw dot cz 2004-06-04 21:15 ` bowdidge at apple dot com 2004-06-04 21:16 ` hubicka at ucw dot cz 2004-06-04 21:54 ` bowdidge at apple dot com 2004-06-04 22:59 ` bowdidge at apple dot com 2004-06-05 0:58 ` bowdidge at apple dot com 2004-06-05 1:02 ` bowdidge at apple dot com 2004-06-05 1:19 ` pinskia at gcc dot gnu dot org 2004-06-14 23:56 ` pinskia at gcc dot gnu dot org 2004-06-15 3:43 ` pinskia at gcc dot gnu dot org 2004-06-15 20:52 ` cvs-commit at gcc dot gnu dot org 2004-06-15 20:52 ` pinskia at gcc dot gnu dot org 2004-07-29 18:09 ` pinskia at gcc dot gnu dot org
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