--- jdk23u-jdk-23.0.1-ga/src/hotspot/share/runtime/os.hpp.orig
+++ jdk23u-jdk-23.0.1-ga/src/hotspot/share/runtime/os.hpp
@@ -1009,6 +1009,8 @@
   class Bsd;
 #elif defined(LINUX)
   class Linux;
+#elif defined(SOLARIS)
+  class Solaris;
 #elif defined(_WINDOWS)
   class win32;
 #endif