diff --git a/lldb/include/lldb/API/SBDefines.h b/lldb/include/lldb/API/SBDefines.h
--- a/lldb/include/lldb/API/SBDefines.h
+++ b/lldb/include/lldb/API/SBDefines.h
@@ -34,7 +34,9 @@
 // supports the attribute.
 #if defined(SWIG) || _cplusplus < 201402L
 #undef LLDB_DEPRECATED
+#undef LLDB_UNSUPPORTED
 #define LLDB_DEPRECATED(MSG, FIX)
+#define LLDB_UNSUPPORTED(MSG)
 #endif
 
 // Forward Declarations
diff --git a/lldb/include/lldb/API/SBValue.h b/lldb/include/lldb/API/SBValue.h
--- a/lldb/include/lldb/API/SBValue.h
+++ b/lldb/include/lldb/API/SBValue.h
@@ -124,7 +124,7 @@
   lldb::SBValue CreateChildAtOffset(const char *name, uint32_t offset,
                                     lldb::SBType type);
 
-  LLDB_DEPRECATED("Use the expression evaluator to perform type casting", "")
+  LLDB_UNSUPPORTED("Use the expression evaluator to perform type casting")
   lldb::SBValue Cast(lldb::SBType type);
 
   lldb::SBValue CreateValueFromExpression(const char *name,
@@ -295,7 +295,7 @@
 
   lldb::SBValue Dereference();
 
-  LLDB_DEPRECATED("Use GetType().IsPointerType() instead", "")
+  LLDB_UNSUPPORTED("Use GetType().IsPointerType() instead")
   bool TypeIsPointerType();
 
   lldb::SBType GetType();
diff --git a/lldb/include/lldb/lldb-defines.h b/lldb/include/lldb/lldb-defines.h
--- a/lldb/include/lldb/lldb-defines.h
+++ b/lldb/include/lldb/lldb-defines.h
@@ -131,4 +131,12 @@
 #define LLDB_DEPRECATED(MSG, FIX) [[deprecated(MSG)]]
 #endif
 
+#if defined(__clang__)
+#define LLDB_UNSUPPORTED(MSG)                                                  \
+  __attribute__((deprecated("This method is no longer supported: " MSG, "")))
+#else
+#define LLDB_UNSUPPORTED(MSG)                                                  \
+  [[deprecated("This method is no longer supported: " MSG)]]
+#endif
+
 #endif // LLDB_LLDB_DEFINES_H