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Re: __gnu_cxx error in OpenSolaris
On 05/19/11 09:09 PM, Jonathan Wakely wrote:
On 19 May 2011 20:03, David Kirkby<david.kirkby@onetel.net> wrote:
I thought we were talking about C++ (my first clue was the subject of
the thread and your mention of "GNU C++")
Throughout your reply you only refer to C, which I'm not qualified or
interested enough to comment on.
But for many practical purposes C++ is a superset of C, so g++ inherits the same
GNUims as gcc.
For example:
#include <iostream>
using namespace std;
int main() {
int a=0b1111111;
cout << a;
}
compiles with g++, but is not valid C++.
There's not even a warning if -Wall is used
drkirkby@hawk:~$ g++ -Wall test.cc
drkirkby@hawk:~$
The Sun compiler quickly identifies this as invalid C++ code.
drkirkby@hawk:~$ CC test.cc
"test.cc", line 5: Error: 0b is not a valid constant.
"test.cc", line 5: Error: Badly formed expression.
2 Error(s) detected.
I'm very interested in making G++ conform to the C++ standard as well
as possible and only objected to the assertion that G++ users don't
care about writing standard C++.
My point is the GNU compilers allow constructs which are not standard. Anyone
starting a C++ project and wishing for it to be standard C++, should not use g++.
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