gcc/cp/class.c

42    scope of any class, this is zero.  */
327       tree zero = cp_convert (TREE_TYPE (expr), integer_zero_node);
329 			       expr, zero);
2167 	 virtual base, we know the adjustments are zero, (and in the
2203        will be zero, as it will be a primary base.  */
2519    When FRIEND_P is zero, T can be a static member data (VAR_DECL),
2712 	  error ("zero width for bit-field %q+D", field);
2973 	/* We don't treat zero-width bitfields as making a class
3163    is returned.  Otherwise, returns zero.  */
3374      either at offset zero (if empty, in which case they cannot
3379      all offsets, as either the empty class is at offset zero (where
3438 	 zero-sized bases.  */
3467 	 Here, we put S at offset zero in U.  Then, we can't put T at
3468 	 offset zero -- its S component would be at the same address
3475 	 offset zero.  */
3556      zero.  */
3644 	 not morally virtual, and at an offset other than zero."  */
3650 	     an empty class placed at offset zero might itself have an
4039 /* Remove all zero-width bit-fields from T.  */
4435     /* An empty class has zero CLASSTYPE_SIZE_UNIT, but we need to
4446    with the highest offset in T.  If INCLUDE_VIRTUALS_P is zero, then
4551      zero-sized base class.  That won't be reflected in RLI, yet,
4695 	     3.2 always created a padding field, even if it had zero
4702 		   of the bit-field; all fields start at offset zero.  */
4847   /* Delete all zero-width bit-fields from the list of fields.  Now
4859 	 empty classes were considered to have size zero when used as
4943   /* Make sure not to create any structures with zero size.  */
5299       /* This is a call to a constructor, hence it's never zero.  */
5309       /* This is a call to a constructor, hence it's never zero.  */
6414 /* If INDENTED_P is zero, indent to INDENT. Return nonzero.  */
6425    INDENT should be zero when called from the top level; it is
7309 	 never be used, so just zero it out.  This is important to avoid
7314 	 zero out unused slots in ctor vtables, rather than filling themff