[cfe-commits] c bitfield issue

[Fariborz Jahanian]

I ran into this bug, having to do with 'signed char' bitfield. Is this  
a known issue/problem
with clang?

- Thanks, Fariborz

struct Foo  {
    signed char  _field1 : 5;
    signed char  _field2    : 3;
};


struct Foo foo;

int main()
{
   struct Foo *f = &foo;

   f->_field1 = 0xf;
   printf("f->_field1 = %x\n", f->_field1);

   f->_field2 = 0x3;
   printf("f->_field2 = %x\n", f->_field2);

   return 0;
}

clang produces the result:

% ./a.out
f->_field1 = f
f->_field2 = ffffffff   <---- Does not look right! should be f