[tor-commits] [tor/master] In tor_tls_get_my_certs(), set cert ptrs even on failure

[nickm at torproject.org]

commit 7c8f20ba44a831ed9f714453fa776762d1c872c5
Author: Nick Mathewson <nickm at torproject.org>
Date:   Tue Sep 18 15:18:52 2018 -0400

    In tor_tls_get_my_certs(), set cert ptrs even on failure
    
    Nothing should ever look at them on failure, but in some cases,
    the unit tests don't check for failure, and then GCC-LTO freaks out.
    
    Fixes part of 27772.
---
 src/lib/tls/tortls.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/lib/tls/tortls.c b/src/lib/tls/tortls.c
index 3ae3a1a09..56f70bc37 100644
--- a/src/lib/tls/tortls.c
+++ b/src/lib/tls/tortls.c
@@ -71,13 +71,19 @@ tor_tls_get_my_certs(int server,
                      const tor_x509_cert_t **id_cert_out)
 {
   tor_tls_context_t *ctx = tor_tls_context_get(server);
-  if (! ctx)
-    return -1;
+  int rv = -1;
+  const tor_x509_cert_t *link_cert = NULL;
+  const tor_x509_cert_t *id_cert = NULL;
+  if (ctx) {
+    rv = 0;
+    link_cert = server ? ctx->my_link_cert : ctx->my_auth_cert;
+    id_cert = ctx->my_id_cert;
+  }
   if (link_cert_out)
-    *link_cert_out = server ? ctx->my_link_cert : ctx->my_auth_cert;
+    *link_cert_out = link_cert;
   if (id_cert_out)
-    *id_cert_out = ctx->my_id_cert;
-  return 0;
+    *id_cert_out = id_cert;
+  return rv;
 }
 
 /**