https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106911
Bug ID: 106911 Summary: ICE in gfc_convert_mpz_to_signed, at fortran/simplify.cc:193 Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: gs...@t-online.de Target Milestone: --- Affects versions down to at least r5 : $ cat z1.f90 program p integer, parameter :: a = 10 integer, parameter :: b = 20 interface subroutine s integer, parameter :: c = ishftc(1_1, a, b) end end interface end $ gfortran-13-20220911 -c z1.f90 f951: internal compiler error: in gfc_convert_mpz_to_signed, at fortran/simplify.cc:193 0x8846e1 gfc_convert_mpz_to_signed(__mpz_struct*, int) ../../gcc/fortran/simplify.cc:193 0x88a75a gfc_simplify_ishftc(gfc_expr*, gfc_expr*, gfc_expr*) ../../gcc/fortran/simplify.cc:4031 0x808f4a do_simplify ../../gcc/fortran/intrinsic.cc:4677 0x813dc8 gfc_intrinsic_func_interface(gfc_expr*, int) ../../gcc/fortran/intrinsic.cc:4942 0x7f9c2c gfc_simplify_expr(gfc_expr*, int) ../../gcc/fortran/expr.cc:2228 0x813f7e gfc_intrinsic_func_interface(gfc_expr*, int) ../../gcc/fortran/intrinsic.cc:5092 0x869578 resolve_unknown_f ../../gcc/fortran/resolve.cc:2990 0x869578 resolve_function ../../gcc/fortran/resolve.cc:3347 0x869578 gfc_resolve_expr(gfc_expr*) ../../gcc/fortran/resolve.cc:7194 0x7f8e04 gfc_reduce_init_expr(gfc_expr*) ../../gcc/fortran/expr.cc:3163 0x7fbd90 gfc_match_init_expr(gfc_expr**) ../../gcc/fortran/expr.cc:3211 0x7e5d2b variable_decl ../../gcc/fortran/decl.cc:3028 0x7e5d2b gfc_match_data_decl() ../../gcc/fortran/decl.cc:6331 0x8519c3 match_word ../../gcc/fortran/parse.cc:67 0x8519c3 decode_statement ../../gcc/fortran/parse.cc:378 0x85340a next_free ../../gcc/fortran/parse.cc:1399 0x85340a next_statement ../../gcc/fortran/parse.cc:1631 0x8556f4 parse_spec ../../gcc/fortran/parse.cc:3986 0x8550ae parse_interface ../../gcc/fortran/parse.cc:3849 0x8550ae parse_spec ../../gcc/fortran/parse.cc:4123