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

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

details:   https://anonhg.NetBSD.org/src/rev/bc19b9eea7b6
branches:  trunk
changeset: 960420:bc19b9eea7b6
user:      rillig <rillig%NetBSD.org@localhost>
date:      Thu Mar 18 23:23:40 2021 +0000

description:
lint: extract extend_if_array_of_unknown_size from initstack_push

No functional change.

diffstat:

 usr.bin/xlint/lint1/init.c |  50 ++++++++++++++++++++++++++-------------------
 1 files changed, 29 insertions(+), 21 deletions(-)

diffs (79 lines):

diff -r 55ee04d0917f -r bc19b9eea7b6 usr.bin/xlint/lint1/init.c
--- a/usr.bin/xlint/lint1/init.c        Thu Mar 18 23:18:36 2021 +0000
+++ b/usr.bin/xlint/lint1/init.c        Thu Mar 18 23:23:40 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: init.c,v 1.96 2021/03/18 22:51:32 rillig Exp $ */
+/*     $NetBSD: init.c,v 1.97 2021/03/18 23:23:40 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 1.96 2021/03/18 22:51:32 rillig Exp $");
+__RCSID("$NetBSD: init.c,v 1.97 2021/03/18 23:23:40 rillig Exp $");
 #endif
 
 #include <stdlib.h>
@@ -519,6 +519,31 @@
        debug_leave();
 }
 
+/* Extend an array of unknown size by one element */
+static void
+extend_if_array_of_unknown_size(void)
+{
+       initstack_element *istk = initstk;
+
+       if (istk->i_remaining != 0)
+               return;
+
+       /*
+        * The only place where an incomplete array may appear is at the
+        * outermost aggregate level of the object to be initialized.
+        */
+       lint_assert(istk->i_enclosing->i_enclosing == NULL);
+       lint_assert(istk->i_type->t_tspec == ARRAY);
+
+       debug_step("extending array of unknown size '%s'",
+           type_name(istk->i_type));
+       istk->i_remaining = 1;
+       istk->i_type->t_dim++;
+       setcomplete(istk->i_type, true);
+
+       debug_step("extended type is '%s'", type_name(istk->i_type));
+}
+
 static void
 initstack_push(void)
 {
@@ -528,26 +553,9 @@
 
        debug_enter();
 
-       istk = initstk;
+       extend_if_array_of_unknown_size();
 
-       /* Extend an incomplete array type by one element */
-       if (istk->i_remaining == 0) {
-               /*
-                * Inside of other aggregate types must not be an incomplete
-                * type.
-                */
-               lint_assert(istk->i_enclosing->i_enclosing == NULL);
-               lint_assert(istk->i_type->t_tspec == ARRAY);
-
-               debug_step("extending array of unknown size '%s'",
-                   type_name(istk->i_type));
-               istk->i_remaining = 1;
-               istk->i_type->t_dim++;
-               setcomplete(istk->i_type, true);
-
-               debug_step("extended type is '%s'", type_name(istk->i_type));
-       }
-
+       istk = initstk;
        lint_assert(istk->i_remaining > 0);
        lint_assert(istk->i_type == NULL || !is_scalar(istk->i_type->t_tspec));