Fix for BIO pairs.

crypto/bio/bio.h

@@ -512,6 +512,14 @@ int BIO_fd_non_fatal_error(int error);
 int BIO_dump(BIO *b,const char *bytes,int len);
 
 struct hostent *BIO_gethostbyname(const char *name);
+/* We might want a thread-safe interface too:
+ * struct hostent *BIO_gethostbyname_r(const char *name,
+ *     struct hostent *result, void *buffer, size_t buflen);
+ * or something similar (caller allocates a struct hostent,
+ * pointed to by "result", and additional buffer space for the various
+ * substructures; if the buffer does not suffice, NULL is returned
+ * and an appropriate error code is set).
+ */
 int BIO_sock_error(int sock);
 int BIO_socket_ioctl(int fd, long type, unsigned long *arg);
 int BIO_socket_nbio(int fd,int mode);

crypto/bio/bss_bio.c

@@ -198,7 +198,7 @@ static int bio_make_pair(BIO *bio1, BIO *bio2)
 		return 0;
 		}
 	
-	if (b1->buf != NULL)
+	if (b1->buf == NULL)
 		{
 		b1->buf = Malloc(b1->size);
 		if (b1->buf == NULL)
@@ -210,7 +210,7 @@ static int bio_make_pair(BIO *bio1, BIO *bio2)
 		b1->offset = 0;
 		}
 	
-	if (b2->buf != NULL)
+	if (b2->buf == NULL)
 		{
 		b2->buf = Malloc(b2->size);
 		if (b2->buf == NULL)

util/libeay.num

@@ -1765,3 +1765,5 @@ PKCS5_PBE_keyivgen                      1789
 i2d_PKCS8_bio                           1790
 i2d_PKCS8_PRIV_KEY_INFO_fp              1791
 i2d_PKCS8_PRIV_KEY_INFO_bio             1792
+BIO_s_bio                               1793
+PKCS5_pbe2_set                          1794