PROBLEM: (92822) (PATCH ID: OSF520-443)
********
This patch fixes a problem in libmld's access_lines()
function that may cause failures in third and other
Atom-based tools.
This failure will be reported by third as shown 
below:

  % third -g -pthread primes
  third: info: instrumenting primes ...

  atom: Error: Command '/tmp/atomAAAaaSv8a/primes.tool' terminated \
  with receipt of SIGSEGV signal.
  atom: Error: A fatal error has occurred.  This could be caused by 
   a lack of space in /tmp, or an instrumentation code error.
   Check /tmp, or run atom with the -debug switch.
  
  third: error: exiting due to error instrumenting primes

All third errors are reported this way.  To see if this
particular third error is caused by the access_lines()
bug, invoke atom directly and include the -debug switch
on the command line.

  % atom -tool third -g -pthread -debug primes -env threads 
  dbx version 5.1
  Type 'help' for help.

  [2] stop in InstrumentAll
  [2] stopped at >*[InstrumentAll, 0x12004d120]  lda     sp, -80(sp)
  (/bin/dbx) cont
  signal Segmentation fault at >*[access_lines, 0x1200f5a14]  ldq_u  a2, 0(s0)