Fix format string in fastlib module.

1 files changed, 2 insertions, 1 deletions

diff --git a/fastlib/src/vespa/fastlib/io/bufferedfile.cpp b/fastlib/src/vespa/fastlib/io/bufferedfile.cpp
index 6a50cfe2259..9af2a73a31b 100644
--- a/fastlib/src/vespa/fastlib/io/bufferedfile.cpp
+++ b/fastlib/src/vespa/fastlib/io/bufferedfile.cpp
@@ -3,6 +3,7 @@
 #include "bufferedfile.h"
 #include <cassert>
 #include <cstring>
+#include <cinttypes>
 
 namespace {
 
@@ -191,7 +192,7 @@ Fast_BufferedFile::SetPosition(const int64_t s)
             diff = _filepos - s;
             if ( !(((diff > 0l) || ((diff == 0l) && (_fileleft == 0l))) && (diff <= static_cast<int64_t>(_buf.size())))) {
                 char tmp[8196];
-                sprintf(tmp, "diff %ld _fileleft=%ld _buflen=%ld", diff, _fileleft, _buf.size());
+                sprintf(tmp, "diff %" PRId64 " _fileleft=%" PRId64 " _buflen=%zu", diff, _fileleft, _buf.size());
                 *static_cast<int *>(0) = 5;
             }
         }