diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/stor-layout.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index eac3fe2..f924395 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-02-25 Eric Botcazou <ebotcazou@adacore.com> + + * stor-layout.c (layout_decl): Do not bump the alignment of a + bit-field to more than byte alignment if it is packed. + 2008-02-24 David Edelsohn <edelsohn@gnu.org> * config/rs6000/rs6000.c (processor_costs): Add cache costs for diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index 1ae2db5..a7bcd05 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -388,13 +388,13 @@ layout_decl (tree decl, unsigned int known_align) { enum machine_mode xmode = mode_for_size_tree (DECL_SIZE (decl), MODE_INT, 1); + unsigned int xalign = GET_MODE_ALIGNMENT (xmode); if (xmode != BLKmode - && (known_align == 0 - || known_align >= GET_MODE_ALIGNMENT (xmode))) + && !(xalign > BITS_PER_UNIT && DECL_PACKED (decl)) + && (known_align == 0 || known_align >= xalign)) { - DECL_ALIGN (decl) = MAX (GET_MODE_ALIGNMENT (xmode), - DECL_ALIGN (decl)); + DECL_ALIGN (decl) = MAX (xalign, DECL_ALIGN (decl)); DECL_MODE (decl) = xmode; DECL_BIT_FIELD (decl) = 0; } |