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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/108957] New: Fortran FE memleak with interfaces
Date: Mon, 27 Feb 2023 22:15:27 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 13.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: anlauf at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108957

            Bug ID: 108957
           Summary: Fortran FE memleak with interfaces
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: anlauf at gcc dot gnu.org
  Target Milestone: ---

The frontend leaks memory for the following sample:

module m
  interface
     subroutine s ()
     end
  end interface
end

=3D=3D7949=3D=3D 3,176 (2,792 direct, 384 indirect) bytes in 1 blocks are d=
efinitely
lost in loss record 160 of 174
=3D=3D7949=3D=3D    at 0x4C39571: calloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
=3D=3D7949=3D=3D    by 0x2E5B904: xcalloc (xmalloc.c:164)
=3D=3D7949=3D=3D    by 0xC6C174: gfc_get_namespace(gfc_namespace*, int)
(symbol.cc:2875)
=3D=3D7949=3D=3D    by 0xC12CB0: parse_interface (parse.cc:3789)
=3D=3D7949=3D=3D    by 0xC12CB0: parse_spec(gfc_statement) (parse.cc:4150)
=3D=3D7949=3D=3D    by 0xC173D8: parse_module() (parse.cc:6531)
=3D=3D7949=3D=3D    by 0xC17851: gfc_parse_file() (parse.cc:6842)
=3D=3D7949=3D=3D    by 0xC76E02: gfc_be_parse_file() (f95-lang.cc:229)
=3D=3D7949=3D=3D    by 0x14F78AB: compile_file() (toplev.cc:444)
=3D=3D7949=3D=3D    by 0x14FA80B: do_compile(bool) (toplev.cc:2125)
=3D=3D7949=3D=3D    by 0x14FABD4: toplev::main(int, char**) (toplev.cc:2277)
=3D=3D7949=3D=3D    by 0x2D9DE05: main (main.cc:39)=