\open-source-parsers#964 Delete JSONCPP_NORETURN for [[noreturn]]

This patch removes the custom JSONCPP_NORETURN macro in favor of the
C++11 standard [[noreturn]] attribute.

Author: baylesj

include/json/value.h

@@ -24,19 +24,6 @@
 #include <cpptl/forwards.h>
 #endif
 
-// Conditional NORETURN attribute on the throw functions would:
-// a) suppress false positives from static code analysis
-// b) possibly improve optimization opportunities.
-#if !defined(JSONCPP_NORETURN)
-#if defined(_MSC_VER)
-#define JSONCPP_NORETURN __declspec(noreturn)
-#elif defined(__GNUC__)
-#define JSONCPP_NORETURN __attribute__((__noreturn__))
-#else
-#define JSONCPP_NORETURN
-#endif
-#endif
-
 // Disable warning C4251: <data member>: <type> needs to have dll-interface to
 // be used by...
 #if defined(JSONCPP_DISABLE_DLL_INTERFACE_WARNING)
@@ -89,9 +76,9 @@ class JSON_API LogicError : public Exception {
 #endif
 
 /// used internally
-JSONCPP_NORETURN void throwRuntimeError(String const& msg);
+[[noreturn]] void throwRuntimeError(String const& msg);
 /// used internally
-JSONCPP_NORETURN void throwLogicError(String const& msg);
+[[noreturn]] void throwLogicError(String const& msg);
 
 /** \brief Type of the value held by a Value object.
  */

src/lib_json/json_value.cpp

@@ -232,15 +232,15 @@ Exception::~Exception() JSONCPP_NOEXCEPT {}
 char const* Exception::what() const JSONCPP_NOEXCEPT { return msg_.c_str(); }
 RuntimeError::RuntimeError(String const& msg) : Exception(msg) {}
 LogicError::LogicError(String const& msg) : Exception(msg) {}
-JSONCPP_NORETURN void throwRuntimeError(String const& msg) {
+[[noreturn]] void throwRuntimeError(String const& msg) {
   throw RuntimeError(msg);
 }
-JSONCPP_NORETURN void throwLogicError(String const& msg) {
+[[noreturn]] void throwLogicError(String const& msg) {
   throw LogicError(msg);
 }
 #else // !JSON_USE_EXCEPTION
-JSONCPP_NORETURN void throwRuntimeError(String const& msg) { abort(); }
-JSONCPP_NORETURN void throwLogicError(String const& msg) { abort(); }
+[[noreturn]] void throwRuntimeError(String const& msg) { abort(); }
+[[noreturn]] void throwLogicError(String const& msg) { abort(); }
 #endif
 
 // //////////////////////////////////////////////////////////////////