LI79025: COMPILER LIMIT EXCEEDED CONSTANT TABLE OVERFLOW WITH -QCHECK/-C

XL Fortran for Blue Gene/Q Fix Pack 14 (May 2016 Update) for 14.1
XL Fortran for Blue Gene/Q Fix Pack 15 (October 2017 Update) for 14.1

APAR status

• Closed as program error.

Error description

• When compiling with the -qcheck/-C option for bounds checking,
  the compiler is encountering an internal compiler error
  referencing a constant table overflow, even when the source is
  small and does not use many constants.
  
  The error message will look similar to:
  
  
     "test.f90", 1500-005 (S) COMPILER LIMIT EXCEEDED in
     _xlfN10empty_typeD1: Constant table overflow.  Compilation
     ended.  Reduce the number of constants in the program to less
     than 262143 and recompile.
  

Local fix

• - Do not use -qcheck/-C
  - Optimization with -O might work around the issue by
  optimizing away internally generated constant symbols causing
  the constant overflow
  

Problem summary

• PROBLEM DESCRIPTION:
  The XL Fortran compiler generates bounds checking code that is
  overflowing an internal table inside the compiler, causing an
  internal error.
  
  USERS AFFECTED:
  Users who have code with nested derived types containing
  allocatable components and compile with bounds checking enabled
  via -C/-qcheck and xlf95.
  

Problem conclusion

• The problem was fixed.
  

Temporary fix

Comments

APAR Information

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

  LI78961

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

  IV85197 IV85624

Fix information

• Fixed component name

  XL FORTRAN FOR

• Fixed component ID

  5799AH100

Applicable component levels

• RD10 PSY

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