test/bufferlist: correct the usage of string constructor

Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>

diff --git a/src/test/bufferlist.cc b/src/test/bufferlist.cc
index eb40b6483d93a6463cbfb4a7513a90df95c3808a..9a70e098ba61582467ce196229c55a5dc5a28d53 100644 (file)
--- a/src/test/bufferlist.cc
+++ b/src/test/bufferlist.cc
@@ -794,7 +794,7 @@ TEST(BufferListIterator, end) {
 static void bench_bufferlistiter_deref(const size_t step,
                                       const size_t bufsize,
                                       const size_t bufnum) {
-  const std::string buf('a', bufsize);
+  const std::string buf(bufsize, 'a');
   ceph::bufferlist bl;
 
   for (size_t i = 0; i < bufnum; i++) {