Fix safestack issues in bio.h

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12781)

.gitignore

@@ -24,6 +24,7 @@
 /include/crypto/*_conf.h
 /include/openssl/asn1.h
 /include/openssl/asn1t.h
+/include/openssl/bio.h
 /include/openssl/cmp.h
 /include/openssl/cms.h
 /include/openssl/configuration.h

build.info

@@ -15,6 +15,7 @@ DEPEND[libssl]=libcrypto
 # unconditionally before anything else.
 DEPEND[]=include/openssl/asn1.h \
          include/openssl/asn1t.h \
+         include/openssl/bio.h \
          include/openssl/cmp.h \
          include/openssl/cms.h \
          include/openssl/configuration.h \
@@ -36,6 +37,7 @@ DEPEND[]=include/openssl/asn1.h \
 
 GENERATE[include/openssl/asn1.h]=include/openssl/asn1.h.in
 GENERATE[include/openssl/asn1t.h]=include/openssl/asn1t.h.in
+GENERATE[include/openssl/bio.h]=include/openssl/bio.h.in
 GENERATE[include/openssl/cmp.h]=include/openssl/cmp.h.in
 GENERATE[include/openssl/cms.h]=include/openssl/cms.h.in
 GENERATE[include/openssl/configuration.h]=include/openssl/configuration.h.in

crypto/asn1/asn_mime.c

@@ -19,8 +19,6 @@
 #include "internal/bio.h"
 #include "asn1_local.h"
 
-DEFINE_STACK_OF(BIO)
-
 /*
  * Generalised MIME like utilities for streaming ASN1. Although many have a
  * PKCS7/CMS like flavour others are more general purpose.

crypto/conf/conf_def.c

@@ -30,8 +30,6 @@
 # endif
 #endif
 
-DEFINE_STACK_OF(BIO)
-
 #ifndef S_ISDIR
 # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
 #endif

include/openssl/bio.h.in

@@ -1,4 +1,6 @@
 /*
+ * {- join("\n * ", @autowarntext) -}
+ *
  * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
@@ -6,6 +8,9 @@
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */
+{-
+use OpenSSL::stackhash qw(generate_stack_macros);
+-}
 
 #ifndef OPENSSL_BIO_H
 # define OPENSSL_BIO_H
@@ -287,7 +292,10 @@ int BIO_method_type(const BIO *b);
 typedef int BIO_info_cb(BIO *, int, int);
 typedef BIO_info_cb bio_info_cb;  /* backward compatibility */
 
-DEFINE_OR_DECLARE_STACK_OF(BIO)
+{-
+    generate_stack_macros("BIO");
+-}
+
 
 /* Prefix and suffix callback in ASN1 BIO */
 typedef int asn1_ps_func (BIO *b, unsigned char **pbuf, int *plen,