From: Su Hang <suhang16@mails.ucas.ac.cn>
Date: Mon, 26 Mar 2018 02:06:22 +0000 (+0800)
Subject: scripts/checkpatch.pl: Bug fix
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=053e45d2f3d3eb51799f371a39434699984e9019;p=qemu.git

scripts/checkpatch.pl: Bug fix

Commit 2b9aef6fcd96ba7ed8c1ee723e391901852d344c introduced a regression:
checkpatch.pl started complaining about the following valid pattern:
do {
     /* something */
} while (condition);

Fix the script to once again permit this pattern.

Signed-off-by: Su Hang <suhang16@mails.ucas.ac.cn>
Message-Id: <1522029982-4650-1-git-send-email-suhang16@mails.ucas.ac.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 57daae05ea..d52207a3cc 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2356,6 +2356,18 @@ sub process {
 # check for missing bracing around if etc
 		if ($line =~ /(^.*)\b(?:if|while|for)\b/ &&
 			$line !~ /\#\s*if/) {
+			my $allowed = 0;
+
+			# Check the pre-context.
+			if ($line =~ /(\}.*?)$/) {
+				my $pre = $1;
+
+				if ($line !~ /else/) {
+					print "APW: ALLOWED: pre<$pre> line<$line>\n"
+						if $dbg_adv_apw;
+					$allowed = 1;
+				}
+			}
 			my ($level, $endln, @chunks) =
 				ctx_statement_full($linenr, $realcnt, 1);
                         if ($dbg_adv_apw) {
@@ -2364,7 +2376,6 @@ sub process {
                                 if $#chunks >= 1;
                         }
 			if ($#chunks >= 0 && $level == 0) {
-				my $allowed = 0;
 				my $seen = 0;
 				my $herectx = $here . "\n";
 				my $ln = $linenr - 1;
@@ -2408,7 +2419,7 @@ sub process {
                                             $allowed = 1;
 					}
 				}
-				if ($seen != ($#chunks + 1)) {
+				if ($seen != ($#chunks + 1) && !$allowed) {
 					ERROR("braces {} are necessary for all arms of this statement\n" . $herectx);
 				}
 			}