[Bug tree-optimization/52979] [4.7/4.8 Regression] likely wrong code bug w/packed bitfields

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52979

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-04-24 11:41:47 UTC ---
This is a kind of dup of PR48124, certainly on the 4.7 branch that doesn't even
try to handle it, and on the trunk (after Honza's changes one needs to swap
struct S a = { 1 };
static struct S b = { 1 };
lines to reproduce) the problem is I guess that DECL_BIT_FIELD_REPRESENTATIVE
is still an int, I guess in packed bitfields we need to use 8-bit type as bit
field representative, or handle those specially in the expansion.