https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68045
Vittorio Zecca <zeccav at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |zeccav at gmail dot com --- Comment #1 from Vittorio Zecca <zeccav at gmail dot com> --- On gfortran 7.0.1 I having the same ICE: module abc implicit none type,abstract::abc_abstract contains procedure(abc_interface),deferred::abc_function end type abc_abstract type,extends(abc_abstract)::abc_type contains procedure::abc_function end type abc_type abstract interface function abc_interface(this) import abc_abstract class(abc_abstract),intent(in)::this character(len=*)::abc_interface end function abc_interface end interface contains function abc_function(this) class(abc_type),intent(in)::this character(len=5)::abc_function abc_function="hello" end function abc_function subroutine do_something(this) class(abc_abstract),intent(in)::this print *,this%abc_function() end subroutine do_something end module abc gfortran gfbug111.f gfbug111.f:30:0: print *,this%abc_function() internal compiler error: Segmentation fault 0xba9c5f crash_signal ../../gcc-7-246252/gcc/toplev.c:337 0x716a88 contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*) ../../gcc-7-246252/gcc/tree.h:3177 0x716a88 gfc_get_character_type(int, gfc_charlen*) ../../gcc-7-246252/gcc/fortran/trans-types.c:1059 0x6c1073 gfc_conv_procedure_call(gfc_se*, gfc_symbol*, gfc_actual_arglist*, gfc_expr*, vec<tree_node*, va_gc, vl_embed>*) ../../gcc-7-246252/gcc/fortran/trans-expr.c:6007 0x6c212a gfc_conv_expr(gfc_se*, gfc_expr*) ../../gcc-7-246252/gcc/fortran/trans-expr.c:7797 0x6ca242 gfc_conv_expr_reference(gfc_se*, gfc_expr*) ../../gcc-7-246252/gcc/fortran/trans-expr.c:7897 0x6f15d2 gfc_trans_transfer(gfc_code*) ../../gcc-7-246252/gcc/fortran/trans-io.c:2508 0x680de7 trans_code ../../gcc-7-246252/gcc/fortran/trans.c:2017 0x6ee252 build_dt ../../gcc-7-246252/gcc/fortran/trans-io.c:1986 0x680e07 trans_code ../../gcc-7-246252/gcc/fortran/trans.c:1989 0x6b2498 gfc_generate_function_code(gfc_namespace*) ../../gcc-7-246252/gcc/fortran/trans-decl.c:6332 0x685d59 gfc_generate_module_code(gfc_namespace*) ../../gcc-7-246252/gcc/fortran/trans.c:2195 0x6395fb translate_all_program_units ../../gcc-7-246252/gcc/fortran/parse.c:6061 0x6395fb gfc_parse_file() ../../gcc-7-246252/gcc/fortran/parse.c:6274 0x67cf6f gfc_be_parse_file ../../gcc-7-246252/gcc/fortran/f95-lang.c:204 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.