http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52718

             Bug #: 52718
           Summary: -Wzero-as-null-pointer-constant: misleading location
                    for 0 as default argument
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: akim.demai...@gmail.com


Created attachment 26990
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26990
0 instead of nullptr as default argument

I don't think this is a duplicated of 51196.

In the following example, the locations about the uses of 0
instead of nullptr are misleading: none point to the real
issue, but they point to where the default argument was used.

$ g++-mp-4.8 -Wzero-as-null-pointer-constant -c /tmp/foo.cc
/tmp/foo.cc: In constructor 'bar::bar()':
/tmp/foo.cc:10:9: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
/tmp/foo.cc: At global scope:
/tmp/foo.cc:15:27: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
/tmp/foo.cc:16:22: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]

$ g++-mp-4.8 --version
g++-mp-4.8 (GCC) 4.8.0 20120318 (experimental)
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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