Patch #568124: Add doc string macros.
diff --git a/Objects/boolobject.c b/Objects/boolobject.c
index 89a7ece..a20af00 100644
--- a/Objects/boolobject.c
+++ b/Objects/boolobject.c
@@ -93,12 +93,12 @@
 
 /* Doc string */
 
-static char bool_doc[] =
+PyDoc_STRVAR(bool_doc,
 "bool(x) -> bool\n\
 \n\
 Returns True when the argument x is true, False otherwise.\n\
 The builtins True and False are the only two instances of the class bool.\n\
-The class bool is a subclass of the class int, and cannot be subclassed.";
+The class bool is a subclass of the class int, and cannot be subclassed.");
 
 /* Arithmetic methods -- only so we can override &, |, ^. */