LI74476: Compiler failure without explicit interface to subroutine accepting variable arguments

April 2009 Update for XL Fortran Advanced Edition for Blue Gene/L, V11.1
September 2010 Update for XL Fortran Advanced Edition for Blue Gene/L, V11.1

APAR status

• Closed as program error.

Error description

• An internal compiler error is encountered when a program calls a
  subroutine that accepts a variable number of parameters but does
  not provide an explicit interface.
  There must be at least two calls to the subroutine that use
  different argument lists in the same compilation unit for this
  problem to be encountered.
  

Local fix

• Provide an explicit interface for the subroutine.
  

Problem summary

• There is no portable way of calling vararg C functions from
  Fortran, however, the compiler should not fail with an internal
  compiler error.
  

Problem conclusion

• The compiler no longer fails.
  

Temporary fix

Comments

APAR Information

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

  IZ33641

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

Fix information

• Fixed component name

  XL FORTRAN AE B

• Fixed component ID

  5799HJG00

Applicable component levels

• RB10 PSN IZ33641

     UP06/09/13