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Subject: [Bug fortran/103312] New: ICE in gfc_find_component
Date: Thu, 18 Nov 2021 11:40:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103312

            Bug ID: 103312
           Summary: ICE in gfc_find_component
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

Created attachment 51831
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51831&action=3Dedit
Testcase

gfortran-12.0.0-alpha20111114 snapshot
(g:3057f1ab737582a9fb37a3fb967ed8bf3659f2f4) ICEs when compiling the attach=
ed
testcase from Neil Carlson's Fortran Compiler Tests repository[1]:

% gfortran-12.0.0 -c flang-20171123a.f90
f951: internal compiler error: Segmentation fault
0xf3712f crash_signal
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/toplev.c:322
0x940804 gfc_find_component(gfc_symbol*, char const*, bool, bool, gfc_ref**)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/symbol.c:2527
0x865801 gfc_add_component_ref(gfc_expr*, char const*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/class.c:247
0x90dc10 resolve_typebound_function
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:6851
0x90dc10 gfc_resolve_expr(gfc_expr*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:7177
0x9114a2 gfc_resolve_expr(gfc_expr*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:7133
0x9114a2 resolve_index_expr
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:12547
0x9114a2 resolve_charlen
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:12600
0x915690 resolve_charlen
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:12568
0x915690 resolve_types
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:17451
0x907ed8 gfc_resolve(gfc_namespace*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:17568
0x907ed8 gfc_resolve(gfc_namespace*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:17549
0x90a651 resolve_symbol
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:16153
0x937b92 do_traverse_symtree
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/symbol.c:4174
0x9156ab resolve_types
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:17453
0x907ed8 gfc_resolve(gfc_namespace*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:17568
0x907ed8 gfc_resolve(gfc_namespace*)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/resolve.c:17549
0x8fa1da gfc_parse_file()
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/parse.c:6779
0x94ea7f gfc_be_parse_file
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc=
c/fortran/f95-lang.c:216

[1] https://github.com/nncarlson/fortran-compiler-tests=