[openssl] master update

[tomas at openssl.org]

The branch master has been updated
       via  cde5a12d5e83ba0d7c5b2dd7bafa4d2abe2d45bf (commit)
      from  3d63315366f673328b41750a6e1708d3d6cf11a0 (commit)


- Log -----------------------------------------------------------------
commit cde5a12d5e83ba0d7c5b2dd7bafa4d2abe2d45bf
Author: Tomas Mraz <tomas at openssl.org>
Date:   Fri Oct 15 14:50:17 2021 +0200

    doc: EVP_PKEY_get_utf8/octet_string_param() clarify NULL buffer behavior
    
    Reviewed-by: Shane Lontis <shane.lontis at oracle.com>
    (Merged from https://github.com/openssl/openssl/pull/16843)

-----------------------------------------------------------------------

Summary of changes:
 doc/man3/EVP_PKEY_gettable_params.pod | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/man3/EVP_PKEY_gettable_params.pod b/doc/man3/EVP_PKEY_gettable_params.pod
index b28ed69939..23ac4bd8b0 100644
--- a/doc/man3/EVP_PKEY_gettable_params.pod
+++ b/doc/man3/EVP_PKEY_gettable_params.pod
@@ -52,11 +52,15 @@ buffer I<str> of maximum size I<max_buf_sz> associated with a name of
 I<key_name>.  The maximum size must be large enough to accomodate the string
 value including a terminating NUL byte, or this function will fail.
 If I<out_len> is not NULL, I<*out_len> is set to the length of the string
-not including the terminating NUL byte.
+not including the terminating NUL byte. The required buffer size not including
+the terminating NUL byte can be obtained from I<*out_len> by calling the
+function with I<str> set to NULL.
 
 EVP_PKEY_get_octet_string_param() get a key I<pkey>'s octet string value into a
 buffer I<buf> of maximum size I<max_buf_sz> associated with a name of I<key_name>.
 If I<out_len> is not NULL, I<*out_len> is set to the length of the contents.
+The required buffer size can be obtained from I<*out_len> by calling the
+function with I<buf> set to NULL.
 
 =head1 NOTES