3167885 - "memfreeheap: possible memory corruption" and timeslice error when TF 132 is enabled - SAP ASE 16.0

• ASE has trace flag (TF) 132 enabled to remove duplicates from the IN list for a query.
• The following errors and stack reported in ASE errorlog:
  
  memfreeheap: possible memory corruption: addrp: 0x0x2dfff653c100 addrp size: -1999436288 bytes guard pointer: 0x0x2dff7f26c6d6
  
  memfreeheap
  dup_elem_memfree
  yyparse
  sqlpars

• The above could repeat thousands of times with different addresses.
• This is followed by a timeslice error in the module addr_to_name() with the stack trace showing the same functions:
  
  timeslice -1001, current process infected at 0x1327466 (addr_to_name+0x36)
  
  (null)  
  pcdescformat
  pcdescprint       
  pcstkwalk        
  ucstkgentrace
  ucbacktrace
  memfreeheap
  dup_elem_memfree
  yyparse
  psqlpars

• Adaptive Server Enterprise 16.0 SP03 PL07
• Adaptive Server Enterprise 16.0 SP04

CR826332, CR#826332, 826332, CR760658, CR#760658, 760658, clause, IN-clause, list, IN-list , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem