[src/trunk]: src/usr.bin/xlint/lint1 lint: clean up check_integer_comparison

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

details:   https://anonhg.NetBSD.org/src/rev/2243391cb504
branches:  trunk
changeset: 1023175:2243391cb504
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Aug 28 16:43:50 2021 +0000

description:
lint: clean up check_integer_comparison

No functional change.

diffstat:

 usr.bin/xlint/lint1/tree.c |  24 ++++++++++++------------
 1 files changed, 12 insertions(+), 12 deletions(-)

diffs (52 lines):

diff -r 476a742a3d6e -r 2243391cb504 usr.bin/xlint/lint1/tree.c
--- a/usr.bin/xlint/lint1/tree.c        Sat Aug 28 16:36:54 2021 +0000
+++ b/usr.bin/xlint/lint1/tree.c        Sat Aug 28 16:43:50 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tree.c,v 1.358 2021/08/28 16:36:54 rillig Exp $        */
+/*     $NetBSD: tree.c,v 1.359 2021/08/28 16:43:50 rillig Exp $        */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: tree.c,v 1.358 2021/08/28 16:36:54 rillig Exp $");
+__RCSID("$NetBSD: tree.c,v 1.359 2021/08/28 16:43:50 rillig Exp $");
 #endif
 
 #include <float.h>
@@ -4098,6 +4098,14 @@
        }
 }
 
+static bool
+is_out_of_char_range(const tnode_t *tn)
+{
+       return tn->tn_op == CON &&
+           (tn->tn_val->v_quad < 0 ||
+            tn->tn_val->v_quad > (int)~(~0U << (CHAR_SIZE - 1)));
+}
+
 /*
  * Check for ordered comparisons of unsigned values with 0.
  */
@@ -4115,16 +4123,8 @@
        if (!is_integer(lt) || !is_integer(rt))
                return;
 
-       if ((hflag || pflag) && lt == CHAR && rn->tn_op == CON &&
-           (rn->tn_val->v_quad < 0 ||
-            rn->tn_val->v_quad > (int)~(~0U << (CHAR_SIZE - 1)))) {
-               /* nonportable character comparison, op %s */
-               warning(230, op_name(op));
-               return;
-       }
-       if ((hflag || pflag) && rt == CHAR && ln->tn_op == CON &&
-           (ln->tn_val->v_quad < 0 ||
-            ln->tn_val->v_quad > (int)~(~0U << (CHAR_SIZE - 1)))) {
+       if ((hflag || pflag) && ((lt == CHAR && is_out_of_char_range(rn)) ||
+                                (rt == CHAR && is_out_of_char_range(ln)))) {
                /* nonportable character comparison, op %s */
                warning(230, op_name(op));
                return;