[openssl-users] Warnings Compiling openssl 1.0.2d

[Matt Caswell]

On 21/07/15 15:33, Tom Browder wrote:
> On Sun, Jul 19, 2015 at 11:00 AM, Tom Browder <tom.browder at gmail.com> wrote:
>> On Thu, Jul 9, 2015 at 12:00 PM, Viktor Dukhovni
>>> That surely means that you're compiling some patched version or
>>> not even 1.0.2d.
>>
>> No, it's the correct version.
>>
>> But just now, after building gcc-5.2.0 and using it to rebuild
>> openssl, all the warnings went away just as Matt said (although the
>> jobserver doesn't work for some reason).
> 
> I lied.  After rebuilding gcc 5.2.0 and rechecking I get the following
> warnings from building 1.0.2d:
> 
> ec_key.c: In function 'EC_KEY_set_public_key_affine_coordinates':
> ec_key.c:369:26: warning: variable 'is_char_two' set but not used
> [-Wunused-but-set-variable]
>      int ok = 0, tmp_nid, is_char_two = 0;


Like I said in my original email this one is due to compiling with
no-ec2m. Its harmless (but should be fixed).


>                           ^
> d1_both.c: In function 'dtls1_retransmit_message':
> d1_both.c:1261:9: warning: 'save_write_sequence' may be used
> uninitialized in this function [-Wmaybe-uninitialized]
>          memcpy(s->s3->write_sequence, save_write_sequence,
>          ^

This one is entirely bogus. "save_write_sequence" is initialized on line
1241. The compiler just isn't clever enough to figure that out.

Matt