From 1f1398bc515b389fd423435fc3d8bfeb927d8af4 Mon Sep 17 00:00:00 2001
From: "Adam C. Emerson" <aemerson@redhat.com>
Date: Wed, 28 Sep 2022 19:57:16 -0400
Subject: [PATCH] mon: Fix snprintf truncation warning by switching to fmtlib

Signed-off-by: Adam C. Emerson <aemerson@redhat.com>
---
 src/mds/cephfs_features.cc | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/mds/cephfs_features.cc b/src/mds/cephfs_features.cc
index dda64edfcd2..61c442699a5 100644
--- a/src/mds/cephfs_features.cc
+++ b/src/mds/cephfs_features.cc
@@ -5,6 +5,10 @@
 #include "cephfs_features.h"
 #include "mdstypes.h"
 
+#undef FMT_HEADER_ONLY
+#define FMT_HEADER_ONLY 1
+#include <fmt/format.h>
+
 static const std::array feature_names
 {
   "reserved",
@@ -69,9 +73,7 @@ void cephfs_dump_features(ceph::Formatter *f, const feature_bitset_t& features)
   for (size_t i = 0; i < feature_names.size(); ++i) {
     if (!features.test(i))
       continue;
-    char s[18];
-    snprintf(s, sizeof(s), "feature_%zu", i);
-    f->dump_string(s, cephfs_feature_name(i));
+    f->dump_string(fmt::format("feature_{}", i),
+		   cephfs_feature_name(i));
   }
 }
-
-- 
2.47.3