https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103475
Bug ID: 103475 Summary: ICE in gfc_expr_attr, at fortran/primary.c:2782 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: gs...@t-online.de Target Milestone: --- With option -Wall and a missing attribute allocatable or pointer : (affects version down to at least r5) (gcc configured with --enable-checking=yes) $ cat z1.f90 program p type t end type class(t) :: x y = x() end $ gfortran-12-20211128 -c z1.f90 -Wall z1.f90:4:16: 4 | class(t) :: x | 1 Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer f951: internal compiler error: Segmentation fault 0xf0942f crash_signal ../../gcc/toplev.c:322 0x842464 gfc_expr_attr(gfc_expr*) ../../gcc/fortran/primary.c:2782 0x7e02eb gfc_check_assign(gfc_expr*, gfc_expr*, int, bool) ../../gcc/fortran/expr.c:3734 0x84a6d5 resolve_ordinary_assign ../../gcc/fortran/resolve.c:11188 0x852a3c gfc_resolve_code(gfc_code*, gfc_namespace*) ../../gcc/fortran/resolve.c:12047 0x854f97 resolve_codes ../../gcc/fortran/resolve.c:17536 0x85505e gfc_resolve(gfc_namespace*) ../../gcc/fortran/resolve.c:17571 0x83d314 resolve_all_program_units ../../gcc/fortran/parse.c:6573 0x83d314 gfc_parse_file() ../../gcc/fortran/parse.c:6829 0x88b37f gfc_be_parse_file ../../gcc/fortran/f95-lang.c:216