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Dear All, The original testcase appears here as dtio_19.f90. I gather that some vendors accept this, while fort does not. IMHO ifort is correct here since there is no specific DTIO procedure present. However, it could be that a more helpful error message to the effect that this is an abstract type and so "do not expect to do DTIO with it" is more appropriate. If this is desired, I can make it so. dtio_20.f90 checks that correct code works. Bootstraps and regtests on FC21/x86_64 - OK for trunk? Paul 2016-12-12 Paul Thomas <pault@gcc.gnu.org> PR fortran/78737 * interface.c (gfc_compare_interfaces): Whitespace. (gfc_find_specific_dtio_proc): Return NULL if dtio_sub is an abstract interface. * resolve.c (resolve_transfer): Formatting. (resolve_typebound_procedure): Ditto. 2016-12-12 Paul Thomas <pault@gcc.gnu.org> PR fortran/78737 * gfortran.dg/dtio_19: New test. * gfortran.dg/dtio_20: New test.
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