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From: "kikairoya at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/59087] New: including complex.h in C++11/1y mode should not include C's complex.h
Date: Tue, 12 Nov 2013 12:49:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59087

            Bug ID: 59087
           Summary: including complex.h in C++11/1y mode should not
                    include C's complex.h
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kikairoya at gmail dot com

working draft N3691 says:

 26.4.10 Header <ccomplex>
  The header behaves as if it simply includes the header <complex>.

 D.5 C standard library headers
  Every C header, each of which has a *name* of the form *name.h*, behaves as
  if each name placed in the standard library namespace by the corresponding
  *cname* header is placed within the global namespace scope.


so, including <complex.h> should behaves as same as including <complex>
except namespace scope, but libstdc++'s one includes system's
<complex.h> unnecessarily.