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Document that a local unw_resume() across threads results in undefined behavior.

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(Logical change 1.59)
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mostang.com!davidm 2003-03-06 06:14:36 +00:00
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doc/unw_resume.tex
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@ -29,7 +29,10 @@ machine state normally involves restoring the ``preserved''
(callee-saved) registers. However, if execution in any of the stack
frames younger (more deeply nested) than the one identified by
\Var{cursor} was interrupted by a signal, then \Func{unw\_resume}()
will restore all registers as well as the signal mask.
will restore all registers as well as the signal mask. Attempting to
call \Func{unw\_resume}() on a cursor which identifies the stack frame
of another thread results in undefined behavior (e.g., the program may
crash).
For remote unwinding, \Func{unw\_resume}() installs the machine state
identified by the cursor by calling the \Func{access\_reg} and