https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77783
Bug ID: 77783
Summary: ICE in gfc_compare_union_types, at
fortran/interface.c:545
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
Needs option -fdec, affects version 6 and 7 :
$ cat z1.f90
subroutine f(x)
structure /s1/
union
map
integer i
end map
end union
end structure
record /s1/ x
x.i = 0
end
subroutine g
structure /s1/
union
end union
end structure
record /s1/ x
call f(x)
end
$ gfortran-7-20160925 -fdec -c z1.f90
f951: internal compiler error: Segmentation fault
0xc28c9f crash_signal
../../gcc/toplev.c:337
0x694787 gfc_compare_union_types(gfc_symbol*, gfc_symbol*)
../../gcc/fortran/interface.c:545
0x69469a compare_components
../../gcc/fortran/interface.c:502
0x694918 gfc_compare_derived_types(gfc_symbol*, gfc_symbol*)
../../gcc/fortran/interface.c:633
0x713474 gfc_type_compatible(gfc_typespec*, gfc_typespec*)
../../gcc/fortran/symbol.c:4906
0x6945a8 gfc_compare_types(gfc_typespec*, gfc_typespec*)
../../gcc/fortran/interface.c:693
0x696b8b compare_parameter
../../gcc/fortran/interface.c:2205
0x69792b compare_actual_formal
../../gcc/fortran/interface.c:2876
0x6998cd gfc_procedure_use(gfc_symbol*, gfc_actual_arglist**, locus*)
../../gcc/fortran/interface.c:3611
0x6f382d resolve_global_procedure
../../gcc/fortran/resolve.c:2477
0x6f3ba7 resolve_call
../../gcc/fortran/resolve.c:3455
0x6f0f60 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:10758
0x6f3382 resolve_codes
../../gcc/fortran/resolve.c:15724
0x6f347e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:15759
0x6ddf9a resolve_all_program_units
../../gcc/fortran/parse.c:5879
0x6ddf9a gfc_parse_file()
../../gcc/fortran/parse.c:6131
0x720d82 gfc_be_parse_file
../../gcc/fortran/f95-lang.c:198
