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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug analyzer/106390] Support gsl::owner<T> and/or [[gnu::owner]]
 attribute in -fanalyzer
Date: Thu, 21 Jul 2022 17:46:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106390

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
As well as checking that destructors free an "owned" member, check that move
constructors and move assignments transfer ownership correctly, i.e. leave =
the
previous owner empty, and for move assignment, ensure any previous value in=
 the
LHS is freed before being replaced i.e. given class Foo with member
gsl::owner<T*> m_ptr:

Foo&
Foo::operator=3D(Foo& rhs)
{
  m_ptr =3D rhs.m_ptr;
  rhs.m_ptr =3D nullptr;
  return *this;
}

flag a bug, because the previous value of m_ptr is overwritten without free=
ing
it.=