resolved most of the compiler warnings/errors under gcc

also update xxhash and tinyformat

1 files changed, 1 insertions, 1 deletions

diff --git a/source/core/StarStringView.cpp b/source/core/StarStringView.cpp
index 1357404..d1c9ae3 100644
--- a/source/core/StarStringView.cpp
+++ b/source/core/StarStringView.cpp
@@ -425,7 +425,7 @@ bool operator<(StringView s1, StringView s2) {
   return s1.m_view < s2.m_view;
 }
 
-std::ostream& operator<<(std::ostream& os, StringView& s) {
+std::ostream& operator<<(std::ostream& os, StringView const& s) {
   os << s.utf8();
   return os;
 }