https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88356
Bug ID: 88356
Summary: [9 Regression] ICE with -Werror in reduce_binary_ac,
at fortran/arith.c:1318 (and others)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
A combination of -Werror with some options like -Wundef, -Wswitch
or others gives ICEs. This changed between 20180624 and 20180708.
$ cat z1.f90
program p
print *, any(abs([1.0]) > epsilon(0.0))
end
$ gfortran-8 -c z1.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: all warnings being treated as errors
$ gfortran-9-20181202 -c z1.f90 -Werror -Wundef
f951: Error: command line option '-Wundef' is valid for C/C++/ObjC/ObjC++ but
not for Fortran [-Werror]
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
../../gcc/toplev.c:326
0x5e915f reduce_binary_ac
../../gcc/fortran/arith.c:1318
0x5e91f2 reduce_binary_ac
../../gcc/fortran/arith.c:1305
0x5e9344 reduce_binary
../../gcc/fortran/arith.c:1431
0x5e967b eval_intrinsic
../../gcc/fortran/arith.c:1606
0x6220f9 simplify_intrinsic_op
../../gcc/fortran/expr.c:1174
0x6220f9 gfc_simplify_expr(gfc_expr*, int)
../../gcc/fortran/expr.c:2142
0x68e353 resolve_operator
../../gcc/fortran/resolve.c:4242
0x68e353 gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6825
0x69023f resolve_actual_arglist
../../gcc/fortran/resolve.c:1918
0x690a08 resolve_function
../../gcc/fortran/resolve.c:3157
0x68dcad gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6832
0x685ceb gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11262
0x6959bf gfc_resolve_blocks(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:10302
0x685e79 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11252
0x688b0f resolve_codes
../../gcc/fortran/resolve.c:16704
0x688bde gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16739
0x676967 resolve_all_program_units
../../gcc/fortran/parse.c:6067
0x676967 gfc_parse_file()
../../gcc/fortran/parse.c:6317
0x6bf5ff gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
