------- Comment #2 from manu at gcc dot gnu dot org 2008-01-14 00:42 -------
Good catch!
Well, there is something weird going on
$ cc1 -fdump-tree-original -O winit-self.c
{
int i = i;
int i = i;
return i;
}
$ cc1plus -fdump-tree-original -O winit-self.c
{
int i;
int i;
<<cleanup_point <<< Unknown tree: expr_stmt
(void) (i = i) >>>
>>;
return <retval> = i;
}
The first problem is that C++ FE does not generate a DECL_EXPR but a BIND_EXPR,
so it does not trigger the conditional in c-gimplify.c (c_gimplify_expr). My
guess is that this have never worked in C++. So we can just delete this option
from the C++ FE and convert this to an enhancement request. If none disagrees,
I will submit a patch in the next days.
--
manu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |manu at gcc dot gnu dot org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |diagnostic
Last reconfirmed|0000-00-00 00:00:00 |2008-01-14 00:42:56
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34772
