Fix datarace reported by valgrind/helgrind

This doesn't really fix the datarace but changes it so it can only happens
once. This isn't really a problem since we always just set it to the same
value. We now just stop writing it after the first time.

PR3584, https://bugs.debian.org/534534

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Rich Salz <rsalz@openssl.org>

Allow ECDHE and DHE as forward-compatible aliases for EECDH and EDH

see RT #3203

Future versions of OpenSSL use the canonical terms "ECDHE" and "DHE"
as configuration strings and compilation constants.  This patch
introduces aliases so that the stable 1.0.2 branch can be
forward-compatible with code and configuration scripts that use the
normalized terms, while avoiding changing any library output for
stable users.

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>

armv4cpuid.S: fix compilation error in pre-ARMv7 build.

PR: 3474
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 6696203963ba209fbbef12098e6eb6f364379c65)

md32_common.h: address compiler warning in HOST_c2l.

Reviewed-by: Stephen Henson <steve@openssl.org>
(cherry picked from commit d45282fc7cd9b97ed1479f8b8af713337fce57f5)

Use only unsigned arithmetic in constant-time operations

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Emilia Käsper <emilia@openssl.org>

Tighten session ticket handling

Tighten client-side session ticket handling during renegotiation:
ensure that the client only accepts a session ticket if the server sends
the extension anew in the ServerHello. Previously, a TLS client would
reuse the old extension state and thus accept a session ticket if one was
announced in the initial ServerHello.

Reviewed-by: Bodo Moeller <bodo@openssl.org>
(cherry picked from commit d663df2399d1d9d6015bcfd2ec87b925ea3558a2)

Sync CHANGES

Reviewed-by: Rich Salz <rsalz@openssl.org>

Fix ssltest logic when some protocols are compiled out.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit fd28a41ec899eb8749e21d11441fd4df35ed9a07)

Conflicts:
ssl/ssltest.c

Copy negotiated parameters in SSL_set_SSL_CTX.

SSL_set_SSL_CTX is used to change the SSL_CTX for SNI, keep the
supported signature algorithms and raw cipherlist.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 14e14bf6964965d02ce89805d9de867f000095aa)

Process signature algorithms in ClientHello late.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit c800c27a8c47c8e63254ec594682452c296f1e8e)

Conflicts:

ssl/ssl.h
ssl/ssl_err.c
ssl/ssl_locl.h

Parse custom extensions after SNI.

Since SNI will typically switch the SSL_CTX structure to the one
corresponding to the appopriate server we need to parse custom
extensions using the switched SSL_CTX not the original one. This
is done by parsing custom extensions *after* SNI.
Reviewed-by: Emilia Käsper <emilia@openssl.org>

Add missing credit.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 9f4bd9d5f932078c485a98f39c3313481898738a)

Fix and improve SSL_MODE_SEND_FALLBACK_SCSV documentation.

Reviewed-by: Rich Salz <rsalz@openssl.org>

When processing ClientHello.cipher_suites, don't ignore cipher suites
listed after TLS_FALLBACK_SCSV.

RT: 3575
Reviewed-by: Emilia Kasper <emilia@openssl.org>

Keep old method in case of an unsupported protocol

When we're configured with no-ssl3 and we receive an SSL v3 Client Hello, we set
the method to NULL.  We didn't used to do that, and it breaks things.  This is a
regression introduced in 62f45cc27d07187b59551e4fad3db4e52ea73f2c.  Keep the old
method since the code is not able to deal with a NULL method at this time.

CVE-2014-3569, PR#3571

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 392fa7a952e97d82eac6958c81ed1e256e6b8ca5)

no-ssl2 with no-ssl3 does not mean drop the ssl lib

Reviewed-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit c882abd52269a59ed8e0510e5febf667428ece85)

RT3547: Add missing static qualifier

Reviewed-by: Ben Laurie <ben@openssl.org>
(cherry picked from commit 87d388c955c14a7c1371f9c7555fb429a406a3d3)

Updates to NEWS file

Reviewed-by: Dr Stephen Henson <steve@openssl.org>

Updates to CHANGES file

Reviewed-by: Bodo Möller <bodo@openssl.org>

Fix no-ssl3 configuration option

CVE-2014-3568

Reviewed-by: Emilia Kasper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

Fix for session tickets memory leak.

CVE-2014-3567

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 5dc6070a03779cd524f0e67f76c945cb0ac38320)

Fix SRTP compile issues for windows

Related to CVE-2014-3513

This fix was developed by the OpenSSL Team

Reviewed-by: Tim Hudson <tjh@openssl.org>
Conflicts:
util/mkdef.pl
util/ssleay.num

Conflicts:
util/mkdef.pl

Fix for SRTP Memory Leak

CVE-2014-3513

This issue was reported to OpenSSL on 26th September 2014, based on an original
issue and patch developed by the LibreSSL project. Further analysis of the issue
was performed by the OpenSSL team.

The fix was developed by the OpenSSL team.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Fix SSL_R naming inconsistency.

Reviewed-by: Tim Hudson <tjh@openssl.org>

aesni-x86_64.pl: make ECB subroutine Windows ABI compliant.

RT: 3553
Reviewed-by: Emilia Kasper <emilia@openssl.org>
(cherry picked from commit 69d5747f90136aa026a96204f26ab39549dfc69b)

Add TLS_FALLBACK_SCSV documentation, and move s_client -fallback_scsv
handling out of #ifndef OPENSSL_NO_DTLS1 section.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Oop: revert unintentional change committed along with
TLS_FALLBACK_SCSV support, restoring a reviewed state instead.

Reviewed-by: Stephen Henson (steve@openssl.org)

Support TLS_FALLBACK_SCSV.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Removed duplicate definition of PKCS7_type_is_encrypted

Patch supplied by Matthieu Patou <mat@matws.net>, and modified to also
remove duplicate definition of PKCS7_type_is_digest.

PR#3551

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit e0fdea3e49e7454aa76bd5ecf3a3747641354c68)

Fix single makefile.

Reviewed-by: Geoffrey Thorpe <geoff@geoffthorpe.net>

RT3462: Document actions when data==NULL

If data is NULL, return the size needed to hold the
derived key.  No other API to do this, so document
the behavior.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 5aed169305941fb1eba15fd4bacc0f998b0e43f7)

DTLS 1.2 support has been added to 1.0.2.

Reviewed-by: Rich Salz <rsalz@openssl.org>

RT2309: Fix podpage MMNNFFPPS->MNNFFPPS

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 9208640a36228b10fcdf75c8853d9410aaff19a3)

e_os.h: refine inline override logic (to address warnings in debug build).

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit 55c7a4cf112bf154ed405ee05a6b7924b6b1ba92)

Add additional DigestInfo checks.

Reencode DigestInto in DER and check against the original: this
will reject any improperly encoded DigestInfo structures.

Note: this is a precautionary measure, there is no known attack
which can exploit this.

Thanks to Brian Smith for reporting this issue.
Reviewed-by: Tim Hudson <tjh@openssl.org>

Prepare for 1.0.2-beta4-dev

Reviewed-by: Stephen Henson <steve@openssl.org>

Prepare for 1.0.2-beta3 release

Reviewed-by: Stephen Henson <steve@openssl.org>

make update

Reviewed-by: Stephen Henson <steve@openssl.org>

Added 1.0.1i CHANGES and NEWS updates

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

Add missing tests

Accidentally omitted from commit 455b65dfab0de51c9f67b3c909311770f2b3f801

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit fdc35a9d3e8cf4cfd9330d5df9883f42cf5648ad)

Add constant_time_locl.h to HEADERS,
so the Win32 compile picks it up correctly.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Add the constant time test to the VMS build and tests

Reviewed-by: Tim Hudson <tjh@openssl.org>

Include "constant_time_locl.h" rather than "../constant_time_locl.h".
The different -I compiler parameters will take care of the rest...

Reviewed-by: Tim Hudson <tjh@openssl.org>

Don't allow non-FIPS curves in FIPS mode.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Use correct function name: CMS_add1_signer()

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 5886354dcca4f8445ed35b6995a035b75409590c)

crypto/bn/bn_nist.c: work around MSC ARM compiler bug.

RT: 3541
Reviewed-by: Emilia Kasper <emilia@openssl.org>
(cherry picked from commit 8b07c005fe006044d0e4a795421447deca3c9f2c)

e_os.h: allow inline functions to be compiled by legacy compilers.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 40155f408985aff2e9f1b61b7cb04a3e518633a1)

RT3425: constant-time evp_enc

Do the final padding check in EVP_DecryptFinal_ex in constant time to
avoid a timing leak from padding failure.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4aac102f75b517bdb56b1bcfd0a856052d559f6e)

Conflicts:
crypto/evp/evp_enc.c

RT3067: simplify patch

(Original commit adb46dbc6dd7347750df2468c93e8c34bcb93a4b)

Use the new constant-time methods consistently in s3_srvr.c

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 455b65dfab0de51c9f67b3c909311770f2b3f801)

This change alters the processing of invalid, RSA pre-master secrets so
that bad encryptions are treated like random session keys in constant
time.

(cherry picked from commit adb46dbc6dd7347750df2468c93e8c34bcb93a4b)

Reviewed-by: Rich Salz <rsalz@openssl.org>

RT3066: rewrite RSA padding checks to be slightly more constant time.

Also tweak s3_cbc.c to use new constant-time methods.
Also fix memory leaks from internal errors in RSA_padding_check_PKCS1_OAEP_mgf1

This patch is based on the original RT submission by Adam Langley <agl@chromium.org>,
as well as code from BoringSSL and OpenSSL.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Conflicts:
crypto/rsa/rsa_oaep.c
crypto/rsa/rsa_pk1.c
ssl/s3_cbc.c

Note i2d_re_X509_tbs and related changes in CHANGES

Reviewed-by: Tim Hudson <tjh@openssl.org>

make update

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>

Add i2d_re_X509_tbs

i2d_re_X509_tbs re-encodes the TBS portion of the certificate.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit 95b1752cc7531e4b609aea166f2db1c155ab5bdd)

Revert "Add accessor for x509.cert_info."

This reverts commit 519ad9b3845c475d29db8b84b59bde7edecb4e70.

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

Revert "Add more accessors."

This reverts commit cacdfcb2479984d9bfcc79b623118d8af6fea169.

Conflicts:
crypto/x509/x509.h

Reviewed-by: Dr Stephen Henson <steve@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

CHANGES: mention ECP_NISTZ256.

Reviewed-by: Bodo Moeller <bodo@openssl.org>
(cherry picked from commit 507efe737243d7c74a839ea90b3d7eec5eac22e7)

crypto/ecp_nistz256.c: harmonize error codes.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit be07ae9b10ea57242baa1f15291af162442531d6)

Fix warning.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 16e5b45f72cd69b71ca28e84044d2354e068888c)

crypto/ec: harmonize new code with FIPS module.

RT: 3149
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

Configure: engage ECP_NISTZ256.

RT: 3149

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 847147908bc7596195debb48a554a8cade2075f7)

Resolved conflicts:

Configure
TABLE

Add ECP_NISTZ256 by Shay Gueron, Intel Corp.

RT: 3149

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4d3fa06fce52682bfbc503c7ded2d0289e3f8cde)

Reserve option to use BN_mod_exp_mont_consttime in ECDSA.

Submitted by Shay Gueron, Intel Corp.
RT: 3149

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f54be179aa4cbbd944728771d7d59ed588158a12)

perlasm/x86_64-xlate.pl: handle inter-bank movd.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 902b30df193afc3417a96ba72a81ed390bd50de3)

Configure: add configuration for crypto/ec/asm extensions.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 6019cdd327526beb25a4c31c1ef63e72f5f8a4b0)

Resolved conflicts:

Configure
Makefile.org
TABLE

Fixed error introduced in commit f2be92b94dad3c6cbdf79d99a324804094cf1617
that fixed PR#3450 where an existing cast masked an issue when i was changed
from int to long in that commit

Picked up on z/linux (s390) where sizeof(int)!=sizeof(long)

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit b5ff559ff90124c6fd53bbb49dae5edb4e821e0a)

Harmonize Tru64 and Linux make rules.

RT: 3333,3165
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d475b2a3bfde8d4aceefb41b21acc3711893d2a8)

RT2301: GetDIBits, not GetBitmapBits in rand_win

GetDIBits has been around since Windows2000 and
BitBitmapBits is an old Win16 compatibility function
that is much slower.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 99b00fd99330afb0be46265c3e28f25f938d3221)

RT2772 update: c_rehash was broken

Move the readdir() lines out of the if statement, so
that flist is available globally.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 6f46c3c3b007f1aed77bbb4d1657fab8521e2e08)

RT3271 update; extra; semi-colon; confuses; some;

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit cb4bb56bae9404572571e8ce573ba9e48d6f7717)

RT2560: missing NULL check in ocsp_req_find_signer

If we don't find a signer in the internal list, then fall
through and look at the internal list; don't just return NULL.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit b2aa38a980e9fbf158aafe487fb729c492b241fb)

RT2196: Clear up some README wording

Say where to email bug reports.
Mention general RT tracker info in a separate paragraph.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 468ab1c20d1f3a43a63d0516fed6c9fefb3ccf71)

RT3192: spurious error in DSA verify

This is funny; Ben commented in the source, Matt opend a ticket,
and Rich is doing the submit.  Need more code-review? :)

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit eb63bce040d1cc6147d256f516b59552c018e29b)

RT3271: Don't use "if !" in shell lines

For portability don't use "if ! expr"

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit b999f66e34d19ae4d81263bc96b8b8d548d2e13c)

RT1909: Omit version for v1 certificates

When calling X509_set_version to set v1 certificate, that
should mean that the version number field is omitted.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 1f18f50c4b0711ebe4a20038d324c0de5dce4512)

RT3506: typo's in ssltest

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 4eadd11cd97ad359a2207e8e554d9fc84fce1110)

RT2841: Extra return in check_issued

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 4cd1119df38b095b6981dfee993195f18ed3c619)

RT2626: Change default_bits from 1K to 2K

This is a more comprehensive fix.  It changes all
keygen apps to use 2K keys. It also changes the
default to use SHA256 not SHA1.  This is from
Kurt's upstream Debian changes.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit 44e0c2bae4bfd87d770480902618dbccde84fd81)

RT2272: Add old-style hash to c_rehash

In addition to Matthias's change, I also added -n to
not remove links. And updated the manpage.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit a787c2590e468585a1a19738e0c7f481ec91b762)

RT468: SSL_CTX_sess_set_cache_size wrong

The documentation is wrong about what happens when the
session cache fills up.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit e9edfc419674f20b482a9beff9c246519f9c503e)

RT3301: Discard too-long heartbeat requests

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit af4c6e348e4bad6303e7d214cdcf2536487aabe4)

RT2518: fix pod2man errors

pod2man now complains when item tags are not sequential.
Also complains about missing =back and other tags.
Silence the warnings; most were already done.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit fe7573042fa7f406fedb78d959659b39a7a1dcfb)

RT3108: OPENSSL_NO_SOCK should imply OPENSSL_NO_DGRAM

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit be0bd11d698677bb7dde14cde73af098da94da18)

RT3031: Need to #undef some names for win32

Copy the ifdef/undef stanza from x509.h to x509v3.h

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 83e4e03eeb22d2fbaec516a466330f2ccab22864)

RT2843: Remove another spurious close-comment token

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 683cd7c9485009efcd5b522357519f0c7e1d4c47)

RT2842: Remove spurious close-comment marker.

Also, I (rsalz) changed "#ifdef undef" to "#if 0"

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 6b0dc6eff1a59274730802db923d55802378d011)

Merge branch 'OpenSSL_1_0_2-stable' of git.openssl.org:openssl into OpenSSL_1_0_2-stable

another empty merge???

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

Empty merge

Merge branch 'OpenSSL_1_0_2-stable' of git.openssl.org:openssl into OpenSSL_1_0_2-stable

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

Empty merge

Merge branch 'OpenSSL_1_0_2-stable' of git.openssl.org:openssl into OpenSSL_1_0_2-stable

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

RT1834: Fix PKCS7_verify return value

The function returns 0 or 1, only.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit b0e659cfaca9ff4a481cc63b7f6b6e97303ad8fe)

RT1832: Fix PKCS7_verify return value

The function returns 0 or 1, only.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit b0e659cfaca9ff4a481cc63b7f6b6e97303ad8fe)

RT1771: Add string.h include.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 8842987e5a76535597b9795b0408565baabf18d1)

RT1325,2973: Add more extensions to c_rehash

Regexp was bracketed wrong.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 5a8addc432503d99dba39474892b07345a619641)

Add CHANGES entry for SCT viewer code.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit b2774f6e17d4204f19a4c009cef9db58821c4456)

psk_client_callback, 128-byte id bug.

Fix a bug in handling of 128 byte long PSK identity in
psk_client_callback.

OpenSSL supports PSK identities of up to (and including) 128 bytes in
length. PSK identity is obtained via the psk_client_callback,
implementors of which are expected to provide a NULL-terminated
identity. However, the callback is invoked with only 128 bytes of
storage thus making it impossible to return a 128 byte long identity and
the required additional NULL byte.

This CL fixes the issue by passing in a 129 byte long buffer into the
psk_client_callback. As a safety precaution, this CL also zeroes out the
buffer before passing it into the callback, uses strnlen for obtaining
the length of the identity returned by the callback, and aborts the
handshake if the identity (without the NULL terminator) is longer than
128 bytes.

(Original patch amended to achieve strnlen in a different way.)

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit be0d851732bad7370640702bc9c4a33189ede287)

Ensure that x**0 mod 1 = 0.

(cherry picked from commit 2b0180c37fa6ffc48ee40caa831ca398b828e680)

Reviewed-by: Ben Laurie <ben@openssl.org>

Followup on RT3334 fix: make sure that a directory that's the empty
string returns 0 with errno = ENOENT.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 360928b7d0f16dde70e26841bbf9e1af727e8b8f)

RT3334: Fix crypto/LPdir_win.c

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 6a14fe7576e7a14a46ba14df8be8fe478536b4fb)

RT3140: Possibly-unit variable in pem_lib.c

Can't really happen, but the flow of control isn't obvious.
Add an initializer.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 0ff3687eab8b0915198ad84d83da5998860b11b3)

Make the inline const-time functions static.

"inline" without static is not correct as the compiler may choose to ignore it
and will then either emit an external definition, or expect one.

Reviewed-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit 86f50b36e63275a916b147f9d8764e3c0c060fdb)