Avoid C++14 ism

bitcoin/test/miniscript_tests.cpp

@@ -237,7 +237,7 @@ const KeyConverter CONVERTER{};
 using NodeType = miniscript::NodeType;
 using NodeRef = miniscript::NodeRef<CPubKey>;
 template<typename... Args> NodeRef MakeNodeRef(Args&&... args) { return miniscript::MakeNodeRef<CPubKey>(std::forward<Args>(args)...); }
-using miniscript::operator""_mst;
+using miniscript::operator"" _mst;
 
 //! Determine whether a Miniscript node is satisfiable at all (and thus isn't equivalent to just "false").
 bool Satisfiable(const NodeRef& ref) {

compiler.cpp

@@ -20,7 +20,7 @@ namespace {
 
 using Node = miniscript::NodeRef<std::string>;
 using NodeType = miniscript::NodeType;
-using miniscript::operator""_mst;
+using miniscript::operator"" _mst;
 
 template<typename... Args>
 Node MakeNode(Args&&... args) { return miniscript::MakeNodeRef<std::string>(std::forward<Args>(args)...); }

js_bindings.cpp

@@ -6,7 +6,7 @@
 
 namespace {
 
-using miniscript::operator""_mst;
+using miniscript::operator"" _mst;
 
 void Output(const std::string& str, char* out, int outlen) {
     int maxlen = std::min<int>(outlen - 1, str.size());

main.cpp

@@ -8,7 +8,7 @@
 
 #include "compiler.h"
 
-using miniscript::operator""_mst;
+using miniscript::operator"" _mst;
 
 static bool run(std::string&& line, int64_t count) {
     if (line.size() && line.back() == '\n') line.pop_back();