https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87919
Bug ID: 87919
Summary: Incorrect fortran handling of -fno-* options
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
Seems gfc_handle_options doesn't handle properly some -fno-* options.
Mark Eggleston has a fix for -fno-dec-structure (that acts the same as
-fdec-structure), but -fno-check-array-temporaries, -fno-init-local-zero and
-fno-dec behave similarly, they ignore the no- part completely.
In
case OPT_fcheck_array_temporaries:
gfc_option.rtcheck |= GFC_RTCHECK_ARRAY_TEMPS;
break;
I guess it should be:
if (value)
gfc_option.rtcheck |= GFC_RTCHECK_ARRAY_TEMPS;
else
gfc_option.rtcheck &= ~GFC_RTCHECK_ARRAY_TEMPS;
for -fno-initi-local-zero for !value I'd say it should set all the knobs to
*_OFF, and -fno-dec, the question is if set_dec_flags (0) actually shouldn't
also undo what set_dec_flags (1) does; then it should do the &= ~ for !value
rather than the useless |= value; which does nothing if value is 0.
