cleanup: Replace GNU attributes w/ standardized ones

Author: robinlinden

lib/src/jvmMain/cpp/CMakeLists.txt

@@ -78,7 +78,6 @@ add_library(
   util/exceptions.cpp
   util/exceptions.h
   util/instance_manager.h
-  util/pp_attributes.h
   util/pp_cat.h
   util/to_bytes.cpp
   util/to_bytes.h

lib/src/jvmMain/cpp/tox4j/Tox4j.h

@@ -9,13 +9,6 @@
 #include "util/to_bytes.h"
 
 
-#if defined(__GNUC__)
-#define NORETURN __attribute__((__noreturn__))
-#else
-#define NORETURN
-#endif
-
-
 #define JAVA_METHOD_NAME(NAME) \
   PP_CAT(Java_im_tox_tox4j_impl_jni_, PP_CAT(CLASS, PP_CAT(Jni_, NAME)))
 

lib/src/jvmMain/cpp/util/exceptions.cpp

@@ -4,7 +4,7 @@
 #include <sstream>
 
 
-PP_NORETURN void
+[[noreturn]] void
 tox4j_fatal_error (JNIEnv *env, char const *message)
 {
   env->FatalError (message);

lib/src/jvmMain/cpp/util/exceptions.h

@@ -4,16 +4,14 @@
 
 #include <string>
 
-#include "util/pp_attributes.h"
-
 
 void throw_tox_killed_exception (JNIEnv *env, jint instance_number, char const *message);
 void throw_illegal_state_exception (JNIEnv *env, jint instance_number, char const *message);
 void throw_illegal_state_exception (JNIEnv *env, jint instance_number, std::string const &message);
 void throw_tox_exception (JNIEnv *env, char const *module, char const *prefix, char const *method, char const *code);
 
 
-PP_NORETURN void tox4j_fatal_error (JNIEnv *env, char const *message);
+[[noreturn]] void tox4j_fatal_error (JNIEnv *env, char const *message);
 
 #define tox4j_fatal(message) tox4j_fatal_error (env, message)