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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60361] [4.7/4.8/4.9 Regression] unexpected 'use of parameter outside function body' error
Date: Mon, 03 Mar 2014 09:49:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60361

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-03-03
      Known to work|                            |4.3.5
            Summary|unexpected 'use of          |[4.7/4.8/4.9 Regression]
                   |parameter outside function  |unexpected 'use of
                   |body' error                 |parameter outside function
                   |                            |body' error
     Ever confirmed|0                           |1
      Known to fail|                            |4.6.2, 4.7.4, 4.8.2, 4.9.0

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
4.4 and 4.5 say:

t.cc:18:34: error: 'A' cannot appear in a constant-expression
t.cc:18:36: error: no matching function for call to 'Helper::Helper(int,
<unresolved overloaded function type>)'
t.cc:3:3: note: candidates are: Helper::Helper(int, void (*)())
t.cc:2:1: note:                 Helper::Helper(const Helper&)

and 4.6 onwards give the "use of parameter 'A' outside function body" error, so
if the code is valid this is a regression.