[Bug middle-end/16670] struct { type:0; } passing bugs

["reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-09-27 16:26 -------
The bug seems to be fixed on mainline by Roger's patch
http://gcc.gnu.org/ml/gcc-cvs/2004-09/msg01232.html

I can only test i686-pc-linux-gnu, though.

The question is whether to apply this patch to the 3.4 and 3.3 branch
as well, although the problem is not really a regression.

I'd vote for fixing this on the 3.4 branch and the 3.3 branch as well, since
a) the code seems to be the same on those branches, i.e. a backport seems
   to be trivial
b) the bug is really a bad one: Sometimes it shows as wrong-code,
   sometimes the compiler crashes depending on the optimization switches
   (it crashes since 3.0 when compiled with -Os, but gives wrong code
   when compiled with -O0 for some versions and works fine with -O3).
   This makes it really painful to track down the bug.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sayle at gcc dot gnu dot
                   |                            |org, gdr at gcc dot gnu dot
                   |                            |org, mark at codesourcery
                   |                            |dot com, reichelt at gcc dot
                   |                            |gnu dot org
           Keywords|                            |ice-on-valid-code
      Known to fail|2.95.3 3.0.4 3.2.3 3.3.3    |2.95.3 3.0.4 3.2.3 3.3.3
                   |3.4.0 4.0                   |3.4.0
      Known to work|                            |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16670