🚀 go-pugleaf

It appears the compiler does not access a bit field with the correct
type in all cases. Specifically, a char bit field is being accessed as
a long. I understand that bit fields are quite compiler dependent, but
this is a bit extreme.

We're using:
  Reading specs from /usr/global/lib/gcc-lib/sparc-sun-solaris2.4/
            2.7.2.1/specs
  gcc version 2.7.2.1

It's a completely vanilla compiler build.

Here's a very simple sample program which will bus-error on a sparc:

struct  Bits
{
   /* if there's a bit field:
    */
   unsigned char y:4;

   /* it fails with this (although other primitive types can exist)
    */
   struct {
      int bar;
   } broken;
};


int main()
{
   char data[30];
   register struct Bits *bits;

   bits = &data[2];

   /* If running on a 'must-align' cpu like a sparc, it
    * bus-errors here. It's doing an int-32 fetch instead of a char.
    */
   bits->y = 5;

   return 0;
}

The compile statement I used is:

   gcc -g test.c -o test

Thanks for any help,
 Jeremy