diff --git a/Python/Python-ast.c b/Python/Python-ast.c
index b562182..5aefbac 100644
--- a/Python/Python-ast.c
+++ b/Python/Python-ast.c
@@ -2,7 +2,7 @@
 
 
 /*
-   __version__ 53873.
+   __version__ 53956.
 
    This module must be committed separately after each AST grammar change;
    The __version__ number is set to the revision number of the commit
@@ -443,10 +443,6 @@
 }
 #define ast2obj_identifier ast2obj_object
 #define ast2obj_string ast2obj_object
-static PyObject* ast2obj_bool(bool b)
-{
-    return PyBool_FromLong(b);
-}
 
 static PyObject* ast2obj_int(long b)
 {
@@ -3013,7 +3009,7 @@
         if (PyDict_SetItemString(d, "AST", (PyObject*)AST_type) < 0) return;
         if (PyModule_AddIntConstant(m, "PyCF_ONLY_AST", PyCF_ONLY_AST) < 0)
                 return;
-        if (PyModule_AddStringConstant(m, "__version__", "53873") < 0)
+        if (PyModule_AddStringConstant(m, "__version__", "53956") < 0)
                 return;
         if (PyDict_SetItemString(d, "mod", (PyObject*)mod_type) < 0) return;
         if (PyDict_SetItemString(d, "Module", (PyObject*)Module_type) < 0)
diff --git a/Python/ast.c b/Python/ast.c
index 9d5caf8..92b02f0 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -1660,7 +1660,7 @@
             int j;
             slice_ty slc;
             expr_ty e;
-            bool simple = true;
+            int simple = 1;
             asdl_seq *slices, *elts;
             slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena);
             if (!slices)
@@ -1670,7 +1670,7 @@
                 if (!slc)
                     return NULL;
                 if (slc->kind != Index_kind)
-                    simple = false;
+                    simple = 0;
                 asdl_seq_SET(slices, j / 2, slc);
             }
             if (!simple) {
diff --git a/Python/compile.c b/Python/compile.c
index 9655765..ed0bdcf 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -119,7 +119,7 @@
 
 	int u_firstlineno; /* the first lineno of the block */
 	int u_lineno;	   /* the lineno for the current stmt */
-	bool u_lineno_set; /* boolean to indicate whether instr
+	int u_lineno_set;  /* boolean to indicate whether instr
 			      has been generated with current lineno */
 };
 
@@ -464,7 +464,7 @@
 	u->u_nfblocks = 0;
 	u->u_firstlineno = lineno;
 	u->u_lineno = 0;
-	u->u_lineno_set = false;
+	u->u_lineno_set = 0;
 	u->u_consts = PyDict_New();
 	if (!u->u_consts) {
 		compiler_unit_free(u);
@@ -643,7 +643,7 @@
 	basicblock *b;
 	if (c->u->u_lineno_set)
 		return;
-	c->u->u_lineno_set = true;
+	c->u->u_lineno_set = 1;
 	b = c->u->u_curblock;
 	b->b_instr[off].i_lineno = c->u->u_lineno;
 }
@@ -1675,7 +1675,7 @@
 	/* XXX(nnorwitz): is there a better way to handle this?
 	   for loops are special, we want to be able to trace them
 	   each time around, so we need to set an extra line number. */
-	c->u->u_lineno_set = false;
+	c->u->u_lineno_set = 0;
 	ADDOP_JREL(c, FOR_ITER, cleanup);
 	VISIT(c, expr, s->v.For.target);
 	VISIT_SEQ(c, stmt, s->v.For.body);
@@ -1898,7 +1898,7 @@
 						s->v.TryExcept.handlers, i);
 		if (!handler->type && i < n-1)
 		    return compiler_error(c, "default 'except:' must be last");
-        c->u->u_lineno_set = false;
+        c->u->u_lineno_set = 0;
         c->u->u_lineno = handler->lineno;
 		except = compiler_new_block(c);
 		if (except == NULL)
@@ -2161,7 +2161,7 @@
 
 	/* Always assign a lineno to the next instruction for a stmt. */
 	c->u->u_lineno = s->lineno;
-	c->u->u_lineno_set = false;
+	c->u->u_lineno_set = 0;
 
 	switch (s->kind) {
 	case FunctionDef_kind:
@@ -3015,7 +3015,7 @@
         */
 	if (e->lineno > c->u->u_lineno) {
 		c->u->u_lineno = e->lineno;
-		c->u->u_lineno_set = false;
+		c->u->u_lineno_set = 0;
 	}
 	switch (e->kind) {
 	case BoolOp_kind: