Fix various instances of implicit conversions.

The implicit conversions were discovered with Clang's UBSan (with
the -fsanitizer=implicit-conversion option).

* gc.c (sweep_one): Convert only the inverted REACHABLE, since
block->t.type is already of the right type.

* hash.c (eql_hash, eq_hash, hash_iter_init, us_hash_iter_init):
Explicitly convert to ucnum.

* linenoise/linenoise.c (enable_raw_mode): Explicitly convert the
inverted flag sets to tcflag_t.

* mpi/mpi.c (mp_set_uintptr): Explicitly convert to uint_ptr_t.

* regex.c (char_set_add): Explicitly convert to bitcell_t.

* struct.c (struct_inst_hash): Correct type of hash from cnum to
ucnum.

1 files changed, 1 insertions, 1 deletions

diff --git a/struct.c b/struct.c
index 592c439b..c4b58785 100644
--- a/struct.c
+++ b/struct.c
@@ -1852,7 +1852,7 @@ static ucnum struct_inst_hash(val obj, int *count, ucnum seed)
   check_init_lazy_struct(obj, si);
 
   for (sl = 0; sl < nslots; sl++) {
-    cnum hash = equal_hash(si->slot[sl], count, seed);
+    ucnum hash = equal_hash(si->slot[sl], count, seed);
     out += hash;
     out &= NUM_MAX;
   }