Internal Compiler Error with GCC 4.1.0

[Gaurav Jain]

On 11/2/06, Andrew Haley <aph@redhat.com> wrote:
> Gaurav Jain writes:
>  > Hi,
>  >
>  > While compiling the piece of code at the end of this mail, I'm getting
>  > an "Internal Compiler Error".  I'm using GCC  4.1.0 on Fedora Core,
>  > Kernel 2.6.15-1.
>  >
>  > This error only occurs with '-g' option.  Also, gcc 3.2 works fine
>  > with the same program.
>  >
>  > Is this a known bug in GCC 4.1?
>
> It's a bug; I can't tell if it's the same bug as those already known.
>
>  > Is there a workaround that I could use such that the code compiles
>  > with gcc 4.1?
>
> Well, it's very weird code.  Why is u static, anyway?
Well this is just a little snippet form an existing codebase.  As you
mentioned, 'u' need not be static, and in fact if I remove the static
keyword the error disappears!
>
> Andrew.
>
>  > /*----- code follows ------*/
>  > int main(int argc, char **argv)
>  > {
>  >         if (sizeof(long) == 8)
>  >         {
>  >                 volatile static union {
>  >                         int i;
>  >                         char c[8];
>  >                 } u;
>  >
>  >                 int big_endian = (u.c[0] == 0x01 || u.c[1] == 0x02);
>  >         }
>  >         return 0;
>  > }
>  > /*--- code ends ------- */
>