2452537 - Running sp_fixindex and create temporary table concurrently cause stacktrace in tempdb

• Running sp_fixindex in tempdb to reclaim space from system tables
• When user creating temporay table at the same time, the user connection stacktrace and holding a lock.

• The following messages reported in errorlog:
  
  server  dbcc dbrepair: Clustered index restored for tempdb..syscomments.
  Current process (0x319f8) infected with signal 11 (SIGSEGV)
  Address 0x0x0000003ea52838a7 (memmove+0xa7), siginfo (code, address) = (1, 0x0xfffffffffffffffa)
  kernel  **** Saved signal context (0x0x00002aac5acdc700): ****
  kernel  ************************************
  kernel  SQL causing error : <SQL>
  kernel  curdb = 2 tempdb = 2 pstat = 0x10000 p2stat = 0x40101000
  kernel  p3stat = 0x800 p4stat = 0x0 p5stat = 0x8 p6stat = 0x10 p7stat = 0x10000
  kernel  lasterror = 0 preverror = 0 transtate = 0
  kernel  curcmd = 0 program = shortcut_server_bss
  kernel  extended error information: hostname: blkcisl005 login: mylogin
  kernel  pc: 0x00000000014e927b pcstkwalk+0x3a3()
  kernel  pc: 0x00000000014e8d53 ucstkgentrace+0x263()
  kernel  pc: 0x00000000014e8d53 ucstkgentrace+0x263()
  kernel  pc: 0x00000000014e4cbe ucbacktrace+0x50()
  kernel  pc: 0x0000000000773b64 terminate_process+0x15e4()
  kernel  pc: 0x0000000001538438 kisignal+0x31f()
  kernel  end of stack trace, spid 6305, kpid 203256, suid 1305

• Adaptive Server Enterprise 16
• Adaptive Server Enterprise 15.7

KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed