------- Additional Comments From steven at gcc dot gnu dot org 2005-01-26
01:55 -------
Why do we cast "v" to "unsigned char" before casting to the bitfield
type? This is already in the GIMPLE dump and comes from the front end:
;; Function store (store)
store (bD.1118, vD.1119)
{
unsigned charD.10 D.1122;
<unnamed type> D.1123;
D.1122 = (unsigned charD.10) vD.1119;
D.1123 = (<unnamed type>) D.1122;
bD.1118->bD.1117 = D.1123;
}
Breakpoint 4, build_modify_expr (lhs=0x2a95895910, modifycode=NOP_EXPR,
rhs=0x2a95988d00)
at c-typeck.c:3321
3321 newrhs = convert_for_assignment (lhstype, newrhs, ic_assign,
(gdb) p debug_generic_expr (newrhs)
vD.1450
$13 = void
(gdb) next
3323 if (TREE_CODE (newrhs) == ERROR_MARK)
(gdb) p debug_generic_expr (newrhs)
(<unnamed type>) (unsigned charD.10) vD.1450
$14 = void
(gdb)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18008
