GCC 4.6 warnings cleanup

sigaction.cc

 // Copyright (c) 2010 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 "debug.h"
 #include "sandbox_impl.h"
 
 namespace playground {
 
 #if defined(__NR_sigaction)
@@ skipping 122 matching lines @@
     die("Failed to read parameters for sigaction() [process]");
   }
   if (sigaction_req.signum == SIGSEGV) {
     // This should never happen. Something went wrong when intercepting the
     // system call. This is not a security problem, but it clearly doesn't
     // make sense to let the system call pass.
     SecureMem::abandonSystemCall(*info, -EINVAL);
     return false;
   }
   SecureMem::sendSystemCall(*info, SecureMem::SEND_UNLOCKED,
-                           sigaction_req.signum, sigaction_req.action,
-                           sigaction_req.old_action, sigaction_req.sigsetsize);
+      sigaction_req.signum,
+      const_cast<SysCalls::kernel_sigaction*>(sigaction_req.action),
+      const_cast<SysCalls::kernel_sigaction*>(sigaction_req.old_action),
+      sigaction_req.sigsetsize);
   return true;
 }
 
 } // namespace