designated initializers extension and sparc

[Sergey Kljopov <hlodvig at unipro dot ru>]

Hi,

Reading the text
-------------
In a structure initializer, specify the name of a field to initialize 
with `.fieldname =' before the element value. For example, given the 
following structure,
     struct point { int x, y; };
the following initialization
     struct point p = { .y = yvalue, .x = xvalue };
is equivalent to
     struct point p = { xvalue, yvalue };
Another syntax which has the same meaning, obsolete since GCC 2.5, is 
`fieldname:', as shown here:
     struct point p = { y: yvalue, x: xvalue };
The `[index]' or `.fieldname' is known as a designator. You can also use 
a designator (or the obsolete colon syntax) when initializing a union, 
to specify which element of the union should be used. For example,
     union foo { int i; double d; };
     union foo f = { .d = 4 };
will convert 4 to a double to store it in the union using the second 
element. By contrast, casting 4 to type union foo would store it into 
the union as the integer i, since it is an integer. (See Cast to Union.)
-------------
I wrote the following test:

union foo { int i; double d; };

int main(int argc, char **argv)
{
    union foo f = { .d = 4 };

    ASSERT_EQ(0, f.i);
    ASSERT_FEQ(4.0, f.d);

    return 0;
}

ASSERT_EQ and ASSERT_FEQ are some macros which checks the falue and 
gives some error messages.

It seems that this extension should be bi-endian, however it fails on 
the sparc.
What the problem with the test?

Sergey