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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/106399] [10/11/12/13 Regression] Wrong debug info for
 function with nested function under O0 since r9-1284-gd70ba0c10dec6968
Date: Fri, 29 Jul 2022 08:44:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106399

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This is an equivalent Ada testcase:

function Foo (A: Integer) return Integer is

  function A2 return Integer is (A * A);

begin
  return A2;
end;

with the same issue.  We have been using the to-be-attached patch for years=
 to
solve the problem, but it does not seem to work for the C compiler because =
the
prologue_location points to '{' instead of the function declarator.=