diff --git a/src/random.cpp b/src/random.cpp
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -47,9 +47,9 @@
 #include <openssl/err.h>
 #include <openssl/rand.h>
 
-static void RandFailure() {
+[[noreturn]] static void RandFailure() {
     LogPrintf("Failed to read randomness, aborting\n");
-    abort();
+    std::abort();
 }
 
 static inline int64_t GetPerformanceCounter() {
diff --git a/src/test/test_bitcoin_main.cpp b/src/test/test_bitcoin_main.cpp
--- a/src/test/test_bitcoin_main.cpp
+++ b/src/test/test_bitcoin_main.cpp
@@ -10,12 +10,12 @@
 
 std::unique_ptr<CConnman> g_connman;
 
-void Shutdown(void *parg) {
-    exit(EXIT_SUCCESS);
+[[noreturn]] void Shutdown(void *parg) {
+    std::exit(EXIT_SUCCESS);
 }
 
-void StartShutdown() {
-    exit(EXIT_SUCCESS);
+[[noreturn]] void StartShutdown() {
+    std::exit(EXIT_SUCCESS);
 }
 
 bool ShutdownRequested() {