On 20 May 2011 07:49, Dr. David Kirkby wrote:
> On 05/20/11 06:23 AM, Miles Bader wrote:
>>
>> "Dr. David Kirkby"<david.kirkby@xxxxxxxxxx> writes:
>>>>
>>>> Stick with GCC and you will be happy.
>>>
>>> That's if you want to write in GNU C++ and don't care about writing
>>> standard C++ code.
>>
>> ... or are capable of adding a "-std=..." option.
>
> BUT IMHO, the default should be to use the standard C++, not a set of
> extensions GCC permits.
Have you seen the default C++ standard library used by the Sun compiler?
Or its treatment of the lifetime of temporaries? (See -features=tmplife)
And it allows __thread by default, but it's a non-standard extension -
the horror!
> In any case, that does not work well.
>
> drkirkby@hawk:~$ cat test.cc
> #include <iostream>
> using namespace std;
>
> int main() {
> int a=0b1111111;
> cout << a;
> }
>
> drkirkby@hawk:~$ g++ -std=c++98 -Wall test.cc
> drkirkby@hawk:~$ ./a.out
> 127drkirkby@hawk:~$
>
> I don't have an official copy of the latest standard, but I don't believe 0b
> is anything other than a GNU extension.
>
> http://gcc.gnu.org/onlinedocs/gcc/Binary-constants.html
Yes, it's an extension, so use -pedantic as documented in the manual.
