IV38556: SIGNAL 11 FROM XLFHOT

XL Fortran for AIX Fix Pack 11 (May 2015 PTF) for 14.1
XL Fortran for AIX Fix Pack 12 (August 2015 Update) for 14.1
XL Fortran for AIX Fix Pack 15 (April 2016 Update) for 14.1
XL Fortran for AIX Fix Pack 16 (July 2016 Update) for 14.1
XL Fortran for AIX Fix Pack 17 (November 2016 Update) for 14.1
XL Fortran for AIX Fix Pack 18 (February 2017 Update) for 14.1
XL Fortran for AIX Fix Pack 19 (August 2017 Update) for 14.1
XL Fortran for AIX Fix Pack 4 (June 2013 PTF) for 14.1
XL Fortran for AIX Fix Pack 5 (September 2013 PTF) for 14.1
XL Fortran for AIX Fix Pack 6 (December 2013 PTF) for 14.1
XL Fortran for AIX Fix Pack 7 (March 2014 PTF) for 14.1
XL Fortran for AIX Fix Pack 8 (July 2014 PTF) for 14.1
XL Fortran for AIX Fix Pack 9 (October 2014 PTF) for 14.1
XL Fortran for AIX Fix Pack 10 (February 2015 PTF) for 14.1
XL Fortran for AIX Fix Pack 14 (December 2015 Update) for 14.1

APAR status

• Closed as program error.

Error description

• When compiling an application with multiple modules, the
  'xlfhot' component of the compiler is encountering an
  internal infinite recursive loop, resulting in a signal 11
  internal compiler error:
  
  
  1501-224 (S) fatal error in /usr/lpp/xlf/bin/xlfhot: signal 11
  received
  

Local fix

Problem summary

• PROBLEM DESCRIPTION:
  The compiler hangs or abnormally terminates when compiling a
  WHERE construct containing calls to the PACK/UNPACK intrinsics.
   For example:
  
  where (pack(..., mask(:)))
  ...
  elsewhere
  ...
  end where
  
  USERS AFFECTED:
  Fortran programmers who use pack/unpack as the mask expression
  in WHERE.
  

Problem conclusion

• An internal mask expression for the WHERE statement was not
  being updated in the compiler, resulting in a recursive loop.
  The issue has been corrected.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  LI77386 LI77650

Fix information

• Fixed component name

  XL FORTRAN FOR

• Fixed component ID

  5725C7400

Applicable component levels

• RE10 PSY UP

     C