static void *v2i_POLICY_CONSTRAINTS(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
-X509V3_EXT_METHOD v3_policy_constraints = {
+const X509V3_EXT_METHOD v3_policy_constraints = {
NID_policy_constraints, 0,
ASN1_ITEM_ref(POLICY_CONSTRAINTS),
0,0,0,0,