Hi Jerry,
Am 22.12.25 um 04:00 schrieb Jerry D:
The attached patch from Steve issues an error if a user trys to use DTIO
with -fdefault-integer-8. I reduced the test case and set it up for the
testsuite. Some may think this is a bit harsh, but one would get silent
wrong results otherwise.
I think it is fine to reject it. If you believe the message is too
harsh, how about:
"Sorry: -fdefault-integer-8 is not supported with user-defined
input/output at %C"
I leave the final decision at your discretion.
OK for mainline, and thanks for the patch!
Harald
Regression tested on x86_64.
OK for mainline?
Regards,
Jerry
Author: Steve Kargl <[email protected]>
Date: Sun Dec 21 18:32:46 2025 -0800
fortran [PR122957] DTIO incompatibility with -fdefault-interger-8
The -fdefault-integer-8 option is optional to assist with legacy
fortran codes. It is not a Stndard requirement and is not
compatible with the newer user defined derived type I/O.
PR fortran/122957
gcc/fortran/ChangeLog:
* interface.cc (gfc_match_generic_spec): Issue an error
so that users do not use -fdefault-integer-8 with DTIO.
gcc/testsuite/ChangeLog:
* gfortran.dg/pr122957.f90: New test.
