Functions that Directly Inspect the Stack

A small number of functions exist that directly inspect the stack or make assumptions regarding its state. Some examples of these functions are the setjmp(3C) family, vfork(2) and any function that returns a structure (not a pointer to a structure). These functions will be compromised by the extra stack created to support la_pltexit().

The runtime linker cannot detect functions of this type, and thus it becomes the responsibility of the audit library creator to disable la_pltexit() for such routines.