From 002ced8a5f25cfbecf5f34e147a0c863ecbf77c7 Mon Sep 17 00:00:00 2001
From: Brad Hubbard <bhubbard@redhat.com>
Date: Mon, 22 Jul 2019 10:05:09 +1000
Subject: [PATCH] osd/OSDCap: Check for empty namespace

Fixes: http://tracker.ceph.com/issues/40835

Signed-off-by: Brad Hubbard <bhubbard@redhat.com>
---
 src/osd/OSDCap.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osd/OSDCap.cc b/src/osd/OSDCap.cc
index e3d541a91df..b6df192c31e 100644
--- a/src/osd/OSDCap.cc
+++ b/src/osd/OSDCap.cc
@@ -115,7 +115,7 @@ bool OSDCapPoolNamespace::is_match(const std::string& pn,
     }
   }
   if (nspace) {
-    if ((*nspace)[nspace->length() - 1] == '*' &&
+    if (!nspace->empty() && nspace->back() == '*' &&
 	boost::starts_with(ns, nspace->substr(0, nspace->length() - 1))) {
       return true;
     }
-- 
2.39.5