Fix 'passing arg 1 of GC_apply_to_all_blocks from incompatible type' error

(fix of commit e717f1191)

Issue #460 (bdwgc).

* backgraph.c [MAKE_BACK_GRAPH] (per_object_helper): Add GC_CALLBACK
modifier; change 2nd argument type from word to GC_word.
* checksums.c [CHECKSUMS] (GC_add_block): Likewise.
* dbg_mlc.c [!SHORT_DBG_HDRS] (GC_check_heap_block): Likewise.
* mark.c (clear_marks_for_block): Likewise.
* misc.c (block_add_size): Likewise.
* reclaim.c (GC_reclaim_block, GC_print_block_descr,
GC_do_enumerate_reachable_objects): Likewise.
* checksums.c [CHECKSUMS] (GC_check_blocks): Remove unnecessary cast of
zero to word.
* include/gc/gc_mark.h (GC_apply_to_all_blocks): Add GC_ATTR_NONNULL(1).

1 files changed, 2 insertions, 1 deletions

diff --git a/mark.c b/mark.c
index 3d806117..93b9a46d 100644
--- a/mark.c
+++ b/mark.c
@@ -166,7 +166,8 @@ GC_INNER void GC_set_hdr_marks(hdr *hhdr)
 }
 
 /* Clear all mark bits associated with block h. */
-static void clear_marks_for_block(struct hblk *h, word dummy GC_ATTR_UNUSED)
+static void GC_CALLBACK clear_marks_for_block(struct hblk *h,
+                                              GC_word dummy GC_ATTR_UNUSED)
 {
     hdr * hhdr = HDR(h);