LI75433: COMPILER ERROR WITH -QNOSAVE AND -O4

May 2010 Update for XL Fortran for Linux, V12.1
January 2012 Update for XL Fortran for Linux, V12.1
January 2011 Update for XL Fortran for Linux, V12.1
June 2011 Update for XL Fortran for Linux, V12.1
XL Fortran for Linux Fix Pack 8 (January 2014 Update) for 12.1

APAR status

• Closed as program error.

Error description

• When compiling a source file with the -qnosave and -O4 options,
  the compiler is encountering an internal error.
  
  >xlf -c testcase.f -O4 -qnosave
  ** testcase   === End of Compilation 1 ===
  1586-346 (U) An error occurred during code generation.  The code
  generation return code was -1.
  1501-511  Compilation failed for file testcase.f.
  

Local fix

• Use a lower optimization level.
  

Problem summary

• USER AFFECTED:
  Any fortran code with computed goto.
  
  PROBLEM DESCRIPTION:
  A transformation in the higher optimzier will add a statement
  between
  the compiler generated code corresponding the the goto which
  was not legal.
  

Problem conclusion

• When adding a statement in the bad optimization, check if it is
  being placed in
  the correct location.
  

Temporary fix

Comments

APAR Information

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

  LI74975

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

Fix information

• Fixed component name

  XL FORTRAN RHEL

• Fixed component ID

  5724U8410

Applicable component levels

• RC10 PSN LI74975

     UP06/09/13