stor-layout.c (place_field): Handle alignment of whole structures when MSVC compatible bitfields are involved.

        * stor-layout.c (place_field): Handle alignment of whole
        structures when MSVC compatible bitfields are involved.
        Change method of computing location of MS bitfields to
        be compatible with #pragma pack(n).

        * tree.h (record_layout_info): Add new field
        remaining_in_alignment.

        * doc/tm.texi: (TARGET_MS_BITFIELD_LAYOUT_P): Update.
        (pragma pack): Add paragraph on MSVC bitfield packing.

Co-Authored-By: Donn Terry <donnte@microsoft.com>

From-SVN: r57281

1 files changed, 2 insertions, 0 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index f95f363..310d643 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -2403,6 +2403,8 @@ typedef struct record_layout_info_s
   /* The static variables (i.e., class variables, as opposed to
      instance variables) encountered in T.  */
   tree pending_statics;
+  /* Bits remaining in the current alignment group */
+  int remaining_in_alignment;
   int packed_maybe_necessary;
 } *record_layout_info;