http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60434
--- Comment #3 from Egor Suvorov <egor_suvorov at mail dot ru> ---
Yes, here is result both with C++03 and with C++11 (they're absolutely the
same):
a.cpp: In function 'int main()':
a.cpp:5:19: warning: format '%f' expects argument of type 'double', but
argument 2 has type 'long double' [-Wformat=]
printf("%f\n", x); // Undefined
^
a.cpp:6:20: warning: format '%lf' expects argument of type 'double', but
argument 2 has type 'long double' [-Wformat=]
printf("%lf\n", x); // Undefined
^
a.cpp:7:20: warning: unknown conversion type character 'L' in format
[-Wformat=]
printf("%Lf\n", x); // Expected '123.45' in C++11
^
a.cpp:7:20: warning: too many arguments for format [-Wformat-extra-args]
a.cpp:12:20: warning: unknown conversion type character 'L' in format
[-Wformat=]
printf("%Lf\n", y); // Undefined
^
a.cpp:12:20: warning: too many arguments for format [-Wformat-extra-args]
