From 7d8c89d47b459e104125dc900251d0bd07c6fd79 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 7 Oct 2020 09:11:03 +0200
Subject: [PATCH] checksrc: detect // comments on column 0

Spotted while working on #6045

Closes #6048
---
 lib/checksrc.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/checksrc.pl b/lib/checksrc.pl
index f9d076a2f8..78b9cef5bd 100755
--- a/lib/checksrc.pl
+++ b/lib/checksrc.pl
@@ -442,7 +442,7 @@ sub scanfile {
 
         # crude attempt to detect // comments without too many false
         # positives
-        if($l =~ /^([^"\*]*)[^:"]\/\//) {
+        if($l =~ /^(([^"\*]*)[^:"]|)\/\//) {
             checkwarn("CPPCOMMENTS",
                       $line, length($1), $file, $l, "\/\/ comment");
         }