With a recent gfortran, the following compiles, but generates the wrong results:
MODULE T INTERFACE cp_log MODULE PROCEDURE cp_logger_log END INTERFACE TYPE cp_logger_type INTEGER :: a END TYPE cp_logger_type PUBLIC :: cp_log, cp_logger_type CONTAINS SUBROUTINE cp_logger_log(logger) TYPE(cp_logger_type), POINTER ::logger END SUBROUTINE FUNCTION cp_get_default_logger() RESULT(res) TYPE(cp_logger_type), POINTER ::res NULLIFY(RES) END FUNCTION cp_get_default_logger END MODULE T USE T CALL cp_log(cp_get_default_logger()) END -- Summary: wrong code generated with gfortran Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jv244 at cam dot ac dot uk http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31211