https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68954
Bug ID: 68954
Summary: [5/6 Regression] -Wdeprecated-declarations warns for
system header templates
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
std::auto_ptr is marked as deprecated in
libstdc++-v3/include/backward/auto_ptr.h
and
#include <memory>
int main()
{
int i;
std::auto_ptr<int> x;
}
warns about this even without -Wsystem-headers. What is worse, since GCC 5.3
adding -Werror makes this an error while with 5.2 it was a warning despite
-Werror:
> /space/rguenther/install/gcc-5.2/bin/g++ t.C -S -std=gnu++11
> -Wdeprecated-declarations -Werror
t.C: In function 'int main()':
t.C:6:8: warning: 'template<class> class std::auto_ptr' is deprecated
[-Wdeprecated-declarations]
std::auto_ptr<int> x;
^
In file included from
/home/space/rguenther/install/gcc-5.2/include/c++/5.2.0/memory:81:0,
from t.C:1:
/home/space/rguenther/install/gcc-5.2/include/c++/5.2.0/bits/unique_ptr.h:49:28note:
declared here
template<typename> class auto_ptr;
^
> /space/rguenther/install/gcc-5.3/bin/g++ t.C -S -std=gnu++11
> -Wdeprecated-declarations -Werror
t.C: In function ‘int main()’:
t.C:6:8: error: ‘template<class> class std::auto_ptr’ is deprecated
[-Werror=deprecated-declarations]
std::auto_ptr<int> x;
^
In file included from
/home/space/rguenther/install/gcc-5.3/include/c++/5.3.0/memory:81:0,
from t.C:1:
/home/space/rguenther/install/gcc-5.3/include/c++/5.3.0/bits/unique_ptr.h:49:28note:
declared here
template<typename> class auto_ptr;
^
cc1plus: all warnings being treated as errors
Note that GCC 4.9 does not warn at all, not even with -Wsystem-headers.
