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[Bug fortran/78641] [5/6/7 Regression] [OOP] ICE on polymorphic allocatable function in array constructor


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78641

janus at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.9.4
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|                            |2016-12-02
                 CC|                            |janus at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|[OOP] ICE on polymorphic    |[5/6/7 Regression] [OOP]
                   |allocatable function in     |ICE on polymorphic
                   |array constructor           |allocatable function in
                   |                            |array constructor
      Known to fail|                            |5.4.1, 6.2.0, 7.0

--- Comment #1 from janus at gcc dot gnu.org ---
Version 4.9.4 swallows it without complaining, later versions give the ICE. The
backtrace on trunk is:

f951: internal compiler error: Segmentation fault
0xfd6d26 crash_signal
        /home/jweil/gcc/gcc7/trunk/gcc/toplev.c:333
0x7b2d75 gfc_add_component_ref(gfc_expr*, char const*)
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/class.c:211
0x87d5dd resolve_ordinary_assign
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/resolve.c:10090
0x87f56d gfc_resolve_code(gfc_code*, gfc_namespace*)
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/resolve.c:10919
0x88c605 resolve_codes
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/resolve.c:16028
0x88c752 gfc_resolve(gfc_namespace*)
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/resolve.c:16063
0x85d10f resolve_all_program_units
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/parse.c:5977
0x85d92b gfc_parse_file()
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/parse.c:6224
0x8b6bc3 gfc_be_parse_file
        /home/jweil/gcc/gcc7/trunk/gcc/fortran/f95-lang.c:202

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