[src/trunk]: src/usr.bin/xlint/lint1 lint: reduce scope of local variables in...

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

details:   https://anonhg.NetBSD.org/src/rev/af6a5fd7708a
branches:  trunk
changeset: 979938:af6a5fd7708a
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun Jan 17 15:31:11 2021 +0000

description:
lint: reduce scope of local variables in check_expr_misc

diffstat:

 usr.bin/xlint/lint1/tree.c |  27 +++++++++++++++------------
 1 files changed, 15 insertions(+), 12 deletions(-)

diffs (76 lines):

diff -r 7099e6c642a0 -r af6a5fd7708a usr.bin/xlint/lint1/tree.c
--- a/usr.bin/xlint/lint1/tree.c        Sun Jan 17 15:24:03 2021 +0000
+++ b/usr.bin/xlint/lint1/tree.c        Sun Jan 17 15:31:11 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tree.c,v 1.172 2021/01/17 15:24:03 rillig Exp $        */
+/*     $NetBSD: tree.c,v 1.173 2021/01/17 15:31:11 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 1.172 2021/01/17 15:24:03 rillig Exp $");
+__RCSID("$NetBSD: tree.c,v 1.173 2021/01/17 15:31:11 rillig Exp $");
 #endif
 
 #include <float.h>
@@ -3885,7 +3885,6 @@
 {
        tnode_t *ln, *rn;
        mod_t   *mp;
-       bool    nrvdisc, cvctx, ctctx;
        op_t    op;
        scl_t   sc;
        dinfo_t *di;
@@ -4016,8 +4015,10 @@
                break;
        }
 
-       cvctx = mp->m_left_value_context;
-       ctctx = mp->m_left_test_context;
+       bool cvctx = mp->m_left_value_context;
+       bool ctctx = mp->m_left_test_context;
+       bool eq = mp->m_warn_if_operand_eq;
+
        /*
         * values of operands of ':' are not used if the type of at least
         * one of the operands (for gcc compatibility) is void
@@ -4026,27 +4027,29 @@
         */
        if (op == COLON && tn->tn_type->t_tspec == VOID)
                cvctx = ctctx = false;
-       nrvdisc = op == CVT && tn->tn_type->t_tspec == VOID;
-       check_expr_misc(ln, cvctx, ctctx, mp->m_warn_if_operand_eq, op == CALL, nrvdisc, szof);
+       bool discard = op == CVT && tn->tn_type->t_tspec == VOID;
+       check_expr_misc(ln, cvctx, ctctx, eq, op == CALL, discard, szof);
 
        switch (op) {
        case PUSH:
                if (rn != NULL)
-                       check_expr_misc(rn, false, false, mp->m_warn_if_operand_eq, false, false, szof);
+                       check_expr_misc(rn, false, false, eq, false, false,
+                           szof);
                break;
        case LOGAND:
        case LOGOR:
-               check_expr_misc(rn, false, true, mp->m_warn_if_operand_eq, false, false, szof);
+               check_expr_misc(rn, false, true, eq, false, false, szof);
                break;
        case COLON:
-               check_expr_misc(rn, cvctx, ctctx, mp->m_warn_if_operand_eq, false, false, szof);
+               check_expr_misc(rn, cvctx, ctctx, eq, false, false, szof);
                break;
        case COMMA:
-               check_expr_misc(rn, vctx, tctx, mp->m_warn_if_operand_eq, false, false, szof);
+               check_expr_misc(rn, vctx, tctx, eq, false, false, szof);
                break;
        default:
                if (mp->m_binary)
-                       check_expr_misc(rn, true, false, mp->m_warn_if_operand_eq, false, false, szof);
+                       check_expr_misc(rn, true, false, eq, false, false,
+                           szof);
                break;
        }