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* [Bug fortran/18794] New: warn about common variable alignment problems @ 2004-12-02 20:12 Thomas dot Koenig at online dot de 2004-12-02 21:01 ` [Bug fortran/18794] " pinskia at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: Thomas dot Koenig at online dot de @ 2004-12-02 20:12 UTC (permalink / raw) To: gcc-bugs $ cat common.f program main character*1 c common /foo/ c,r c = 'a' r = 1.2 end $ g77 common.f common.f: In program `main': common.f:3: warning: common /foo/ c,r ^ Initial padding for common block `foo' is 3 bytes at (^) -- consider reorderingmembers, largest-type-size first $ gfortran common.f $ gfortran -v Reading specs from /home/ig25/lib/gcc/i686-pc-linux-gnu/4.0.0/specs Configured with: ../gcc/configure --prefix=/home/ig25 --enable-languages=c,c++,f95 : (reconfigured) ../gcc/configure --prefix=/home/ig25 --with-gcc-version-trigger=/home/ig25/gcc/gcc/version.c --enable-languages=c,c++,f95 --no-create --no-recursion Thread model: posix gcc version 4.0.0 20041129 (experimental) Just about any Fortran compiler warns about this sort of thing (and they should, the performance penalty for this kind of thing can be severe). -- Summary: warn about common variable alignment problems Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: enhancement Priority: P2 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: Thomas dot Koenig at online dot de CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18794 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/18794] warn about common variable alignment problems 2004-12-02 20:12 [Bug fortran/18794] New: warn about common variable alignment problems Thomas dot Koenig at online dot de @ 2004-12-02 21:01 ` pinskia at gcc dot gnu dot org 2005-01-06 14:42 ` tobi at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-12-02 21:01 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-02 21:01 ------- Confirmed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Keywords| |diagnostic Last reconfirmed|0000-00-00 00:00:00 |2004-12-02 21:01:49 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18794 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/18794] warn about common variable alignment problems 2004-12-02 20:12 [Bug fortran/18794] New: warn about common variable alignment problems Thomas dot Koenig at online dot de 2004-12-02 21:01 ` [Bug fortran/18794] " pinskia at gcc dot gnu dot org @ 2005-01-06 14:42 ` tobi at gcc dot gnu dot org 2005-01-17 11:05 ` Thomas dot Koenig at online dot de 2005-04-20 2:00 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: tobi at gcc dot gnu dot org @ 2005-01-06 14:42 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- OtherBugsDependingO| |19292 nThis| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18794 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/18794] warn about common variable alignment problems 2004-12-02 20:12 [Bug fortran/18794] New: warn about common variable alignment problems Thomas dot Koenig at online dot de 2004-12-02 21:01 ` [Bug fortran/18794] " pinskia at gcc dot gnu dot org 2005-01-06 14:42 ` tobi at gcc dot gnu dot org @ 2005-01-17 11:05 ` Thomas dot Koenig at online dot de 2005-04-20 2:00 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: Thomas dot Koenig at online dot de @ 2005-01-17 11:05 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From Thomas dot Koenig at online dot de 2005-01-17 11:05 ------- This is fixed with the 20050116 snapshot: $ gfortran common.f In file common.f:3 common /foo/ c,r 1 Warning: COMMON 'foo' at (1) requires 3 bytes of padding at start Thomas -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18794 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug fortran/18794] warn about common variable alignment problems 2004-12-02 20:12 [Bug fortran/18794] New: warn about common variable alignment problems Thomas dot Koenig at online dot de ` (2 preceding siblings ...) 2005-01-17 11:05 ` Thomas dot Koenig at online dot de @ 2005-04-20 2:00 ` pinskia at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-04-20 2:00 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.0.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18794 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-04-20 2:00 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-12-02 20:12 [Bug fortran/18794] New: warn about common variable alignment problems Thomas dot Koenig at online dot de 2004-12-02 21:01 ` [Bug fortran/18794] " pinskia at gcc dot gnu dot org 2005-01-06 14:42 ` tobi at gcc dot gnu dot org 2005-01-17 11:05 ` Thomas dot Koenig at online dot de 2005-04-20 2:00 ` pinskia at gcc dot gnu dot org
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