[tor-bugs] #24424 [Core Tor/Tor]: fails to build with libseccomp-dev installed on arm64

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#24424: fails to build with libseccomp-dev installed on arm64
-------------------------------------------------+-------------------------
 Reporter:  weasel                               |          Owner:  nickm
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.2.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  unspecified
 Severity:  Normal                               |     Resolution:
 Keywords:  029-backport 030-backport            |  Actual Points:
  031-backport                                   |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by weasel):

 This makes things build on arm64 (and does not break builds on arm64 or
 arm64):
 {{{
 --- src/common/sandbox.c        2017-11-20 18:22:10.000000000 +0000
 +++ /home/weasel/sandbox.c      2017-11-28 08:31:16.990108519 +0000
 @@ -106,6 +106,11 @@

  #define M_SYSCALL arm_r7

 +#elif defined(__aarch64__) && defined(__LP64__)
 +
 +#define REG_SYSCALL 8
 +#define M_SYSCALL regs[REG_SYSCALL]
 +
  #endif /* defined(__i386__) || ... */

  /**Determines if at least one sandbox is active.*/
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24424#comment:6>
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