IZ66384: INTERNAL COMPILER ERROR WITH -QSMP -QINITAUTO -QAUTODBL

September 2012 PTF for XL Fortran for AIX, V12.1
October 2010 PTF for XL Fortran for AIX, V12.1
March 2010 PTF for XL Fortran for AIX, V12.1
April 2010 PTF for XL Fortran for AIX, V12.1
June 2010 PTF for XL Fortran for AIX, V12.1
February 2011 PTF for XL Fortran for AIX, V12.1
May 2011 PTF for XL Fortran for AIX, V12.1
July 2011 PTF for XL Fortran for AIX, V12.1
October 2011 PTF for XL Fortran for AIX, V12.1
February 2012 PTF for XL Fortran for AIX, V12.1
January 2013 PTF for XL Fortran for AIX, V12.1
XL Fortran for AIX Fix Pack 18 (July 2013) for 12.1
XL Fortran for AIX Fix Pack 19 (October 2013) for 12.1
XL Fortran for AIX Fix Pack 20 (October 2014 PTF) for 12.1

APAR status

• Closed as program error.

Error description

• The following simple Fortran test case causes the xlf90_r
  compiler to abend in IPA64 with a combination of options:
  
  -qautodbl=dblpad4 -qsmp -qinitauto
  
  
  ===== TESTCASE:
  $cat psgr1.f
         SUBROUTINE PSGR1 ( XLABEL, IPGSIZ )
  
         IMPLICIT NONE
         CHARACTER*(*) :: XLABEL
         INTEGER :: IPGSIZ
         INTEGER :: XAXLEN
  
         IF (IPGSIZ.EQ.0) THEN
            XAXLEN = 560
         END IF
         CALL PSGR2(XAXLEN)
  
         END
  

Local fix

• Use -qsmp=noopt or remove any of the option in the combination
  Or use xlf_r instead
  

Problem summary

• USERS AFFECTED:
  Users of XLF with options -O3 and higher and options -qinitauto
  -qautodbl
  are affected by this issue.
  
  PROBLEM DESCRIPTION:
  The backend optimizer was not allowing an internal flag with 4
  byte entities
  to be stored into 8 byte variables without conversion. Because
  of this,
  the compiler was ending with an internal compiler error.
  

Problem conclusion

• The solution was to teach the backend to allow for this in it's
  auto initialization routine.
  

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:

  LI75469 LI75490

Fix information

• Fixed component name

  XL FORTRAN AIX

• Fixed component ID

  5724U8200

Applicable component levels