Errors within this category do not stop execution of the link-editor nor do they prevent the link-editor from producing a viable a.out. The following conditions produce warnings:
A physical_address or a virtual_address value or a length value appears for any segment other than a LOAD segment. (The directive is ignored).
A second declaration line exists for the same segment that changes an attribute value(s). (The second declaration overrides the original).
An attribute value(s) (segment_type and/or segment_flags for text and data; segment_type for note) was changed for one of the built-in segments.
An attribute value(s) (segment_type, segment_flags, length and/or alignment) was changed for a segment created by an implicit declaration. If only the ?O flag has been added then the change of attribute value warning will not be generated.
An entrance criteria was not met. If the ?O flag has been turned on and if none of the input sections met an entrance criteria, the warning is generated.