Prefer memset to repeatedly assigning Qnil

* alloc.c (allocate_pseudovector): Catch more bogus values.
* alloc.c (allocate_pseudovector):
* callint.c (Fcall_interactively):
* coding.c (syms_of_coding):
* fringe.c (init_fringe):
Verify that Qnil == 0.
* callint.c (Fcall_interactively):
* eval.c (Fapply, Ffuncall):
* fns.c (mapcar1, larger_vector):
* font.c (font_expand_wildcards):
* fringe.c (init_fringe):
Prefer memset to assigning zeros by hand.
* callint.c (Fcall_interactively):
Remove duplicate assignment of Qnil to args[i].
* coding.c (syms_of_coding):
Prefer LISP_INITIALLY_ZERO to assigning zeros by hand.
* fileio.c (Ffile_selinux_context):
Rewrite to avoid need for Lisp_Object array.
* lisp.h (XLI_BUILTIN_LISPSYM): New macro.
(DEFINE_LISP_SYMBOL_END): Use it.
(NIL_IS_ZERO): New constant.
(memsetnil): New function.

1 files changed, 3 insertions, 4 deletions

diff --git a/src/font.c b/src/font.c
index 56a27821718..190b33a8ef0 100644
--- a/src/font.c
+++ b/src/font.c
@@ -989,15 +989,14 @@ font_expand_wildcards (Lisp_Object *field, int n)
           if (i == 0 || ! NILP (tmp[i - 1]))
             /* None of TMP[X] corresponds to Jth field.  */
             return -1;
-          for (; j < range[i].from; j++)
-            field[j] = Qnil;
+          memsetnil (field + j, range[i].from - j);
+          j = range[i].from;
         }
       field[j++] = tmp[i];
     }
   if (! NILP (tmp[n - 1]) && j < XLFD_REGISTRY_INDEX)
     return -1;
-  for (; j < XLFD_LAST_INDEX; j++)
-    field[j] = Qnil;
+  memsetnil (field + j, XLFD_LAST_INDEX - j);
   if (INTEGERP (field[XLFD_ENCODING_INDEX]))
     field[XLFD_ENCODING_INDEX]
       = Fintern (Fnumber_to_string (field[XLFD_ENCODING_INDEX]), Qnil);