[src/trunk]: src/usr.bin/xlint/lint1 lint: extract check_bit_field_init from ...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f0fb57f7d904
branches:  trunk
changeset: 959671:f0fb57f7d904
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun Feb 21 14:57:25 2021 +0000

description:
lint: extract check_bit_field_init from init_using_expr

No functional change.

diffstat:

 usr.bin/xlint/lint1/init.c |  27 ++++++++++++++++-----------
 1 files changed, 16 insertions(+), 11 deletions(-)

diffs (55 lines):

diff -r 6d31e3afb4a2 -r f0fb57f7d904 usr.bin/xlint/lint1/init.c
--- a/usr.bin/xlint/lint1/init.c        Sun Feb 21 14:49:23 2021 +0000
+++ b/usr.bin/xlint/lint1/init.c        Sun Feb 21 14:57:25 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: init.c,v 1.85 2021/02/21 14:19:27 rillig Exp $ */
+/*     $NetBSD: init.c,v 1.86 2021/02/21 14:57:25 rillig Exp $ */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: init.c,v 1.85 2021/02/21 14:19:27 rillig Exp $");
+__RCSID("$NetBSD: init.c,v 1.86 2021/02/21 14:57:25 rillig Exp $");
 #endif
 
 #include <stdlib.h>
@@ -729,6 +729,19 @@
        debug_leave();
 }
 
+/* In traditional C, bit-fields can be initialized only by integer constants. */
+static void
+check_bit_field_init(const tnode_t *ln, tspec_t lt, tspec_t rt)
+{
+       if (tflag &&
+           is_integer(lt) &&
+           ln->tn_type->t_bitfield &&
+           !is_integer(rt)) {
+               /* bit-field initialisation is illegal in traditional C */
+               warning(186);
+       }
+}
+
 void
 init_using_expr(tnode_t *tn)
 {
@@ -822,15 +835,7 @@
        expr(tn, true, false, true, false);
        trestor(tmem);
 
-       if (is_integer(lt) && ln->tn_type->t_bitfield && !is_integer(rt)) {
-               /*
-                * Bit-fields can be initialized in trad. C only by integer
-                * constants.
-                */
-               if (tflag)
-                       /* bit-field initialisation is illegal in trad. C */
-                       warning(186);
-       }
+       check_bit_field_init(ln, lt, rt);
 
        if (lt != rt || (initstk->i_type->t_bitfield && tn->tn_op == CON))
                tn = convert(INIT, 0, initstk->i_type, tn);