[PATCH] Fortran: make IEEE_CLASS recognize signaling NaNs

[FX]

Hi,

I can confirm that I don’t see this failure on a Debian bullseye/sid (Linux 5.11.0-46, glibc 2.31-0ubuntu9.2) with a fresh bootstrap of master:

$ grep signaling testsuite/gfortran/gfortran.sum
PASS: gfortran.dg/ieee/signaling_1.f90   -O0  (test for excess errors)
PASS: gfortran.dg/ieee/signaling_1.f90   -O0  execution test
PASS: gfortran.dg/ieee/signaling_1.f90   -O1  (test for excess errors)
PASS: gfortran.dg/ieee/signaling_1.f90   -O1  execution test
PASS: gfortran.dg/ieee/signaling_1.f90   -O2  (test for excess errors)
PASS: gfortran.dg/ieee/signaling_1.f90   -O2  execution test
PASS: gfortran.dg/ieee/signaling_1.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
PASS: gfortran.dg/ieee/signaling_1.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
PASS: gfortran.dg/ieee/signaling_1.f90   -O3 -g  (test for excess errors)
PASS: gfortran.dg/ieee/signaling_1.f90   -O3 -g  execution test
PASS: gfortran.dg/ieee/signaling_1.f90   -Os  (test for excess errors)
PASS: gfortran.dg/ieee/signaling_1.f90   -Os  execution test

It’s showing on some gcc-testresults for x86_64 and aarch64 linux, so I’ll need someone (HJ, Andreas are in CC) to show me what the error is.

It may be related to the use of dg-options instead of dg-additional-options in that testcase, so I pushed the attached fix. I’ll check the test results mailing-list to see if it improved things (or confirm when the error message is posted).

FX


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