[Bug other/31477] [libgcc] miscompiled trapping arithmetic routines

2010-05-22 Thread jsm28 at gcc dot gnu dot org 


--- Comment #3 from jsm28 at gcc dot gnu dot org  2010-05-22 17:29 ---
I believe I fixed this with:

r132815 | jsm28 | 2008-03-02 13:11:19 + (Sun, 02 Mar 2008) | 4 lines

* libgcc2.c (__addvSI3, __addvsi3, __addvDI3, __subvSI3,
__subvsi3, __subvDI3, __negvSI2, __negvsi2, __negvDI2, __absvSI2,
__absvsi2, __absvDI2): Use unsigned arithmetic.

(whether or not -ftrapv actually works properly).


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jsm28 at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution||FIXED
   Target Milestone|--- |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31477

[Bug other/31477] [libgcc] miscompiled trapping arithmetic routines

2007-04-09 Thread rguenth at gcc dot gnu dot org 


--- Comment #2 from rguenth at gcc dot gnu dot org  2007-04-09 18:45 ---
comment #5 in PR19020 mentions several reasons why -ftrapv doesn't really work
right now.  I'd be in favor of removing it rather than trying to fix it...


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rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever Confirmed|0   |1
   Last reconfirmed|-00-00 00:00:00 |2007-04-09 18:45:22
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31477

[Bug other/31477] [libgcc] miscompiled trapping arithmetic routines

2007-04-04 Thread pinskia at gcc dot gnu dot org 


--- Comment #1 from pinskia at gcc dot gnu dot org  2007-04-05 00:08 ---
An even better idea is to have them being called with simple programs :).
See PR 19020 for that issue.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31477