[Bug middle-end/48914] New: #pragma GCC diagnostic ignored "-Wc++0x-compat" doesn't work

[bero at arklinux dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48914

           Summary: #pragma GCC diagnostic ignored "-Wc++0x-compat"
                    doesn't work
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: bero@arklinux.org


$ cat test.cpp
#pragma GCC diagnostic ignored "-Wc++0x-compat"
namespace std {
        class nullptr_t { };
}
extern std::nullptr_t nullptr;

$ g++ -Wc++0x-compat -c test.cpp
test.cpp:5:1: warning: identifier ‘nullptr’ will become a keyword in C++0x
[-Wc++0x-compat]

$ g++ -Wc++0x-compat -Werror -c test.cpp
test.cpp:5:1: error: identifier ‘nullptr’ will become a keyword in C++0x
[-Werror=c++0x-compat]
cc1plus: all warnings being treated as errors