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* [Bug c++/19816] C++ front-end produces a cast instead of just &a.b (empty base class)
[not found] <bug-19816-6528@http.gcc.gnu.org/bugzilla/>
@ 2010-09-09 11:06 ` hubicka at gcc dot gnu dot org
2010-09-13 14:57 ` jason at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: hubicka at gcc dot gnu dot org @ 2010-09-09 11:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from hubicka at gcc dot gnu dot org 2010-09-09 11:05 -------
Hmm, my system compiles (4.3.2) gets:
_Z1fv:
.LFB2:
subq $24, %rsp
.LCFI0:
leaq 23(%rsp), %rdi
call _ZN4baseC2Ev
addq $24, %rsp
ret
.LFE2:
this seems OK to me?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19816
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/19816] C++ front-end produces a cast instead of just &a.b (empty base class)
[not found] <bug-19816-6528@http.gcc.gnu.org/bugzilla/>
2010-09-09 11:06 ` [Bug c++/19816] C++ front-end produces a cast instead of just &a.b (empty base class) hubicka at gcc dot gnu dot org
@ 2010-09-13 14:57 ` jason at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: jason at gcc dot gnu dot org @ 2010-09-13 14:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jason at gcc dot gnu dot org 2010-09-13 14:57 -------
This isn't a bug. We produce a cast here because no field is generated for an
empty base class. From class.c:
/* We do not create a FIELD_DECL for empty base classes because it might
overlap some other field. We want to be able to create CONSTRUCTORs for the
class by iterating over the FIELD_DECLs, and the back end does not handle
overlapping FIELD_DECLs. */
--
jason at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu dot org
Status|NEW |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19816
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/19816] C++ front-end produces a cast instead of just &a.b (empty base class)
2005-02-08 15:09 [Bug c++/19816] New: " pinskia at gcc dot gnu dot org
@ 2005-03-17 17:50 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-03-17 17:50 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-03-17 17:50 -------
Confirmed
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |missed-optimization, TREE
Last reconfirmed|0000-00-00 00:00:00 |2005-03-17 17:50:13
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19816
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2010-09-13 14:57 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-19816-6528@http.gcc.gnu.org/bugzilla/>
2010-09-09 11:06 ` [Bug c++/19816] C++ front-end produces a cast instead of just &a.b (empty base class) hubicka at gcc dot gnu dot org
2010-09-13 14:57 ` jason at gcc dot gnu dot org
2005-02-08 15:09 [Bug c++/19816] New: " pinskia at gcc dot gnu dot org
2005-03-17 17:50 ` [Bug c++/19816] " pinskia at gcc dot gnu dot org
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