http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52718
--- Comment #13 from Matthew Woehlke <mw_triad at users dot sourceforge.net>
2012-11-01 17:56:49 UTC ---
...and with your example I do indeed get no warning.
Simplified test case:
$ cat zero-as-pointer.h
#pragma GCC system_header
class Foo
{
public:
Foo(void** = 0);
};
class Bar
{
public:
Bar(Foo = 0);
};
$ cat zero-as-pointer.cpp
#include "zero-as-pointer.h"
int main()
{
Bar bar;
return 0;
}
$ g++ -std=c++11 -Werror=zero-as-null-pointer-constant zero-as-pointer.cpp
zero-as-pointer.cpp: In function ‘int main()’:
zero-as-pointer.cpp:5:7: error: zero as null pointer constant
[-Werror=zero-as-null-pointer-constant]
cc1plus: some warnings being treated as errors
Apparently it is something about the 'Foo = 0' part (replace Foo with
Qt::WindowFlags in my 'real' example).
