[Bug c++/55557] New: g++ 4.7 does not issue a warning on the first auto_ptr

[Bug c++/55557] New: g++ 4.7 does not issue a warning on the first auto_ptr

[pashev.igor at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55557

             Bug #: 55557
           Summary: g++ 4.7 does not issue a warning on the first auto_ptr
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: pashev.igor@gmail.com


Here is a C++ source code:

# cat -n test.cpp
 1  #include <memory>
 2  using namespace std;
 3   
 4  int main(int argc, char **argv)
 5  {
 6      auto_ptr<int> x;
 7      auto_ptr<int> y;
 8      auto_ptr<int> z;
 9   
10      return 0;
11  }

Command line to compile it with C++11 standard:
g++-4.7 -std=gnu++11 -Wall -Wextra -Wdeprecated-declarations  -pedantic
test.cpp 

Here is the g++ output:
test.cpp: In function ‘int main(int, char**)’:
test.cpp:7:19: warning: ‘auto_ptr’ is deprecated (declared at
/usr/include/c++/4.7/backward/auto_ptr.h:87) [-Wdeprecated-declarations]
test.cpp:8:19: warning: ‘auto_ptr’ is deprecated (declared at
/usr/include/c++/4.7/backward/auto_ptr.h:87) [-Wdeprecated-declarations]
test.cpp: At global scope:
test.cpp:4:5: warning: unused parameter ‘argc’ [-Wunused-parameter]
test.cpp:4:5: warning: unused parameter ‘argv’ [-Wunused-parameter]

A warning about auto_ptr being deprecated has been issued only for y and z. I
expect a warning for x too.

Moreover, if I leave only one auto_ptr (say, x) I will see no deprecation
warning at all.

It is expected to see warning on every auto_ptr instantiation.

[Bug c++/55557] g++ 4.7 does not issue a warning on the first auto_ptr

[pashev.igor at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55557

--- Comment #1 from Igor Pashev <pashev.igor at gmail dot com> 2012-12-01 20:46:12 UTC ---
# g++-4.7 --version
g++-4.7 (Debian 4.7.2-4) 4.7.2
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.

[Bug c++/55557] no deprecated warning on the first std::auto_ptr

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55557

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-12-01
            Summary|g++ 4.7 does not issue a    |no deprecated warning on
                   |warning on the first        |the first std::auto_ptr
                   |auto_ptr                    |
     Ever Confirmed|0                           |1

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-12-01 22:01:35 UTC ---
Weird, doesn't seem a regression though.

[Bug c++/55557] no deprecated warning on the first std::auto_ptr

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55557

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-12-01 22:12:13 UTC ---
Well, this is the old PR33911: only, in that one Benjamin didn't notice that an
additional:

goo<int> f2b;

finally gets the working.

*** This bug has been marked as a duplicate of bug 33911 ***