Honest question, since I have no expertise in the field: If C89 says that "Permissible undefined behavior" includes "ignoring the situation completely with unp

Honest question, since I have no expertise in the field: If C89 says that "Permissible undefined behavior" includes "ignoring the situation completely with unpredictable results" can you give an example of something that would constitute non permissible undefined behaviour according to the standard?