https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97455
G. Steinmetz <gs...@t-online.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gs...@t-online.de
--- Comment #2 from G. Steinmetz <gs...@t-online.de> ---
Update, backtrace and a variation :
$ cat z1.f90
subroutine s
select type (x => x(:))
end select
end
$ cat z2.f90
subroutine s
select type (x ==> x)
end select
end
$ gfortran-11-20210328 -c z1.f90
f951: internal compiler error: Segmentation fault
0xc09d4f crash_signal
../../gcc/toplev.c:327
0x6576ba delete_root
../../gcc/fortran/bbt.c:150
0x65787e gfc_delete_bbt(void*, void*, int (*)(void*, void*))
../../gcc/fortran/bbt.c:197
0x7224d8 gfc_delete_symtree(gfc_symtree**, char const*)
../../gcc/fortran/symbol.c:2962
0x723bd6 gfc_restore_last_undo_checkpoint()
../../gcc/fortran/symbol.c:3706
0x6dab47 reject_statement
../../gcc/fortran/parse.c:2678
0x6de324 match_word
../../gcc/fortran/parse.c:70
0x6de324 decode_statement
../../gcc/fortran/parse.c:428
0x6dfb3c next_free
../../gcc/fortran/parse.c:1316
0x6dfb3c next_statement
../../gcc/fortran/parse.c:1548
0x6e1f04 parse_spec
../../gcc/fortran/parse.c:3783
0x6e3f7c parse_progunit
../../gcc/fortran/parse.c:5896
0x6e5a20 gfc_parse_file()
../../gcc/fortran/parse.c:6444
0x7320ef gfc_be_parse_file
../../gcc/fortran/f95-lang.c:212
