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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/96184] [11/12 Regression] GCC treats "use of local variable
 with automatic storage from containing function" differently in
 versions
Date: Fri, 10 Sep 2021 20:05:02 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96184

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
   Target Milestone|9.5                         |11.0
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gn=
u.org
            Summary|[9/10 Regression] GCC       |[11/12 Regression] GCC
                   |treats "use of local        |treats "use of local
                   |variable with automatic     |variable with automatic
                   |storage from containing     |storage from containing
                   |function" differently in    |function" differently in
                   |versions                    |versions

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
I think it's ill-formed, because the use of 'a' is in a function parameter
scope, rather than in 'main'.

The changes in whether we accepted this testcase were indeed by accident, as
the way we handled 'this' injection changed whether parsing_nsdmi() returned
true.=