Index: testsuite/g++.dg/warn/Winit-self.C
===================================================================
--- testsuite/g++.dg/warn/Winit-self.C	(revision 0)
+++ testsuite/g++.dg/warn/Winit-self.C	(revision 0)
@@ -0,0 +1,8 @@
+// PR c++/53210
+// { dg-options "-Wall" }
+
+struct S
+{
+  S(int i) : j(j) { }  // { dg-warning "is initialized with itself" }
+  int j;
+};
Index: doc/invoke.texi
===================================================================
--- doc/invoke.texi	(revision 191245)
+++ doc/invoke.texi	(working copy)
@@ -3348,6 +3348,8 @@ int f()
 @end group
 @end smallexample
 
+This warning is enabled by @option{-Wall} in C++.
+
 @item -Wimplicit-int @r{(C and Objective-C only)}
 @opindex Wimplicit-int
 @opindex Wno-implicit-int
Index: c-family/c.opt
===================================================================
--- c-family/c.opt	(revision 191245)
+++ c-family/c.opt	(working copy)
@@ -408,7 +408,7 @@ C C++ Var(warn_ignored_qualifiers) Warning Enabled
 Warn whenever type qualifiers are ignored.
 
 Winit-self
-C ObjC C++ ObjC++ Var(warn_init_self) Warning
+C ObjC C++ ObjC++ Var(warn_init_self) Warning LangEnabledBy(C++ ObjC++,Wall)
 Warn about variables which are initialized to themselves
 
 Wimplicit