Question

While compiling a Visual Studio 2010 program, I included the python2.5 directory. In the file _types.h, there is the code:

#ifndef __off64_t_defined
__extension__ typedef long long _off64_t;
#endif

with the error on extension:

this declaration has no storage class or type specifier.

What is wrong?

Answer 1

To quote GCC manual:

   `-pedantic' and other options cause warnings for many GNU C
extensions.  You can prevent such warnings within one expression by
writing `__extension__' before the expression.  `__extension__' has no
effect aside from this.

I’d say it’s safe to simply ignore it for VC2010. So just define it as nothing.

#define __extension__