Avoid runtime linker warning ...

base/nss_init.cc

 // Copyright (c) 2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/nss_init.h"
 
+#include <dlfcn.h>
 #include <nss.h>
 #include <plarena.h>
 #include <prerror.h>
 #include <prinit.h>
 
 // Work around https://bugzilla.mozilla.org/show_bug.cgi?id=455424
 // until NSS 3.12.2 comes out and we update to it.
 #define Lock FOO_NSS_Lock
 #include <pk11pub.h>
 #include <secmod.h>
@@ skipping 69 matching lines @@
     if (slot) {
       if (PK11_NeedUserInit(slot))
         PK11_InitPin(slot, NULL, NULL);
       PK11_FreeSlot(slot);
     }
 
     root_ = InitDefaultRootCerts();
 
     NSS_SetDomesticPolicy();
 
+    // Use late binding to avoid scary but benign warning
+    // "Symbol `SSL_ImplementedCiphers' has different size in shared object,
+    //  consider re-linking"
+    const PRUint16* pSSL_ImplementedCiphers = static_cast<const PRUint16*>(
+        dlsym(RTLD_DEFAULT, "SSL_ImplementedCiphers"));
+    if (pSSL_ImplementedCiphers == NULL) {
+      NOTREACHED() << "Can't get list of supported ciphers";
+      return;
+    }
+
     // Explicitly enable exactly those ciphers with keys of at least 80 bits
     for (int i = 0; i < SSL_NumImplementedCiphers; i++) {
       SSLCipherSuiteInfo info;
-      if (SSL_GetCipherSuiteInfo(SSL_ImplementedCiphers[i], &info,
+      if (SSL_GetCipherSuiteInfo(pSSL_ImplementedCiphers[i], &info,
                                  sizeof(info)) == SECSuccess) {
-        SSL_CipherPrefSetDefault(SSL_ImplementedCiphers[i],
+        SSL_CipherPrefSetDefault(pSSL_ImplementedCiphers[i],
                                  (info.effectiveKeyBits >= 80));
       }
     }
 
     // Enable SSL
     SSL_OptionSetDefault(SSL_SECURITY, PR_TRUE);
 
     // All other SSL options are set per-session by SSLClientSocket.
   }
 
@@ skipping 25 matching lines @@
 
 }  // namespace
 
 namespace base {
 
 void EnsureNSSInit() {
   Singleton<NSSInitSingleton>::get();
 }
 
 }  // namespace base