Index: lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_riscv64.cpp
===================================================================
--- lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_riscv64.cpp
+++ lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_riscv64.cpp
@@ -10,6 +10,7 @@
 
 #include "NativeRegisterContextLinux_riscv64.h"
 
+#include "lldb/Host/HostInfo.h"
 #include "lldb/Utility/DataBufferHeap.h"
 #include "lldb/Utility/Log.h"
 #include "lldb/Utility/RegisterValue.h"
@@ -48,6 +49,11 @@
   }
 }
 
+llvm::Expected<ArchSpec>
+NativeRegisterContextLinux::DetermineArchitecture(lldb::tid_t tid) {
+  return HostInfo::GetArchitecture();
+}
+
 NativeRegisterContextLinux_riscv64::NativeRegisterContextLinux_riscv64(
     const ArchSpec &target_arch, NativeThreadProtocol &native_thread,
     std::unique_ptr<RegisterInfoPOSIX_riscv64> register_info_up)