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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/27817] AddressSanitizer: new-delete-type-mismatch (new
 signatured_type)
Date: Mon, 03 May 2021 22:13:14 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27817

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |simark at simark dot ca,
                   |                            |tromey at sourceware dot o=
rg

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Hmm, so we allocate a signatured_type:
...
          auto sig_type =3D per_objfile->per_bfd->allocate_signatured_type =
();
...
which we then move to:
...
      std::unique_ptr<dwarf2_per_cu_data> this_cu;
      ...
          this_cu =3D std::move (sig_type);
...
and store it:
...
      per_objfile->per_bfd->all_comp_units.push_back (std::move (this_cu));
...

Then when dwarf2_per_bfd::~dwarf2_per_bfd() is called, it also invokes the
destructor for:
...
  std::vector<std::unique_ptr<dwarf2_per_cu_data>> all_comp_units;
...
and the item is deallocated with a dwarf2_per_cu_data type instead of a
signatured_type.

--=20
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