Fix 'signed-to-bigger-unsigned value assignment' warning for hb_map

* include/private/gc_priv.h (hblkhdr): Change type of hb_map from
short to unsigned short.
* include/private/gc_priv.h (_GC_arrays): Change type of _obj_map from
short to unsigned short.
* obj_map.c (GC_add_map_entry): Change type of new_map local variable
from short to unsigned short.

1 files changed, 3 insertions, 3 deletions

diff --git a/obj_map.c b/obj_map.c
index c935bf3f..9fdeb0af 100644
--- a/obj_map.c
+++ b/obj_map.c
@@ -51,13 +51,13 @@ GC_INNER void GC_register_displacement_inner(size_t offset)
   GC_INNER GC_bool GC_add_map_entry(size_t granules)
   {
     unsigned displ;
-    short * new_map;
+    unsigned short * new_map;
 
     if (granules > BYTES_TO_GRANULES(MAXOBJBYTES)) granules = 0;
     if (GC_obj_map[granules] != 0) {
         return(TRUE);
     }
-    new_map = (short *)GC_scratch_alloc(MAP_LEN * sizeof(short));
+    new_map = (unsigned short *)GC_scratch_alloc(MAP_LEN * sizeof(short));
     if (new_map == 0) return(FALSE);
     GC_COND_LOG_PRINTF(
                 "Adding block map for size of %u granules (%u bytes)\n",
@@ -68,7 +68,7 @@ GC_INNER void GC_register_displacement_inner(size_t offset)
       }
     } else {
       for (displ = 0; displ < BYTES_TO_GRANULES(HBLKSIZE); displ++) {
-        new_map[displ] = (short)(displ % granules);
+        new_map[displ] = (unsigned short)(displ % granules);
       }
     }
     GC_obj_map[granules] = new_map;