source: src/tests/GccExtensions.c @ fa234ef

int main(int argc, char const *argv[])
    asm( "nop" );
    __asm( "nop" );
    __asm__( "nop" );

    __complex__ c1;
    _Complex c2;

    const int i1;
    __const int i2;
    __const__ int i3;

    __extension__ const int ex;

    __inline int f1();
    __inline__ int f2();

    __signed s1;
    __signed s2;

    __otypeof(s1) t1;
    __otypeof__(s1) t2;

    __volatile int v1;
    __volatile__ int v2;

    __attribute__(()) int a1;
    const __attribute(()) int a2;
    const static __attribute(()) int a3;
    const static int __attribute(()) a4;
    const static int a5 __attribute(());
    const static int a6, __attribute(()) a7;

    int * __attribute(()) p1;
    int (* __attribute(()) p2);
//    int (__attribute(()) (p3));
//    int ( __attribute(()) (* __attribute(()) p4));

    struct __attribute(()) s1;
    struct __attribute(()) s2 { int i; };
    struct __attribute(()) s3 { int i; } x1, __attribute(()) y1;
    struct __attribute(()) s4 { int i; } x2, y2 __attribute(());

    int m1 [10] __attribute(());
    int m2 [10][10] __attribute(());
    int __attribute(()) m3 [10][10];
//    int ( __attribute(()) m4 [10] )[10];

        return 0;
}