From b9a6202ac9fadd5d69c4a92c870dc783581568da Mon Sep 17 00:00:00 2001
From: OBATA Akio <obache@wizdas.com>
Date: Sat, 25 Jul 2020 11:48:24 +0900
Subject: [PATCH] Fix potentially buffer overrun related to readlink(2)

Signed-off-by: OBATA Akio <obache@wizdas.com>
(cherry picked from commit 5c32919647732d0e20dc08ad4a8d24193238174f)
---
 qmake/project.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qmake/project.cpp b/qmake/project.cpp
index 3957144..0508c31 100644
--- a/qmake/project.cpp
+++ b/qmake/project.cpp
@@ -724,7 +724,7 @@ QMakeProject::isActiveConfig(const QString &x, bool regex, QMap<QString, QString
 	static char *buffer = NULL;
 	if(!buffer)
 	    buffer = (char *)malloc(1024);
-	int l = readlink(Option::mkfile::qmakespec, buffer, 1024);
+	int l = readlink(Option::mkfile::qmakespec, buffer, 1023);
 	if(l != -1) {
 	    buffer[l] = '\0';
 	    QString r = buffer;