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/gc.c b/gc.c
index 0c727ed4..311f66d2 100644
--- a/gc.c
+++ b/gc.c
@@ -606,7 +606,7 @@ static int sweep_one(obj_t *block)
 #if CONFIG_GEN_GC
     block->t.gen = 1;
 #endif
-    block->t.type = convert(type_t, block->t.type & ~REACHABLE);
+    block->t.type &= convert(type_t, ~REACHABLE);
     return 0;
   }