From 2901995fc8fa282d4f90a04b40475ea9e3f8b44c Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 30 Jan 2020 10:17:42 +0100
Subject: [PATCH] Fix issue excluding unstable packages when stabilityFlags are
 empty

---
 src/Composer/Repository/ComposerRepository.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Repository/ComposerRepository.php b/src/Composer/Repository/ComposerRepository.php
index 07eff48eb..626bf119f 100644
--- a/src/Composer/Repository/ComposerRepository.php
+++ b/src/Composer/Repository/ComposerRepository.php
@@ -697,7 +697,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
         }
 
         foreach ($versions as $version) {
-            if ($acceptableStabilities && $stabilityFlags && !StabilityFilter::isPackageAcceptable($acceptableStabilities, $stabilityFlags, array($name), VersionParser::parseStability($version))) {
+            if (null !== $acceptableStabilities && null !== $stabilityFlags && !StabilityFilter::isPackageAcceptable($acceptableStabilities, $stabilityFlags, array($name), VersionParser::parseStability($version))) {
                 continue;
             }