[Bug c++/17577] New: #pragma implementation no longer diagnoses use after file to which it applies

[zack at gcc dot gnu dot org]

With the C++ lexer speedup patch (which I will cross-reference as soon as it is
posted) handle_pragma_implementation calls cpp_included after the entire
translation unit is processed by cpplib, so it will return true whether or not
the #pragma appears lexically after the file it applies to.  This can be fixed
most practically by completing Per's --enable-mapped-location mode and then
comparing the line+file cookie of the #pragma to the first line+file cookie of
the file it applies to, and the diagnostic is not an essential feature, so the
patch disables it, which constitutes a regression.  Filing this bug and
assigning to myself so we don't forget about it.

-- 
           Summary: #pragma implementation no longer diagnoses use after
                    file to which it applies
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: zack at gcc dot gnu dot org
        ReportedBy: zack at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17577