D43317.1784750742.diff
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	diff --git a/lib/libc/gen/getcontext.3 b/lib/libc/gen/getcontext.3
	--- a/lib/libc/gen/getcontext.3
	+++ b/lib/libc/gen/getcontext.3
	@@ -141,9 +141,31 @@
	.It Bq Er ENOMEM
	No memory was available to allocate for the context or some extended state.
	.El
	+.Sh BUGS
	+.Fn getcontext
	+and
	+.Fn setcontext
	+may not save and restore all the CPU's state.
	+The state that is not saved can change between a call to
	+.Fn getcontext
	+and subsequent
	+.Fn setcontext .
	+Use
	+.Fn getcontextx
	+and
	+.Fn setcotnextx
	+to avoid this problem.
	+The same caveat applies for
	+.Fn getcontext
	+and
	+.Fn sigreturn
	+though the kernel typically manages the
	+.Vt ucontext_t
	+when signals are sent to a process.
	.Sh SEE ALSO
	.Xr sigaction 2 ,
	.Xr sigaltstack 2 ,
	+.Xr sigreturn 2 ,
	.Xr makecontext 3 ,
	.Xr ucontext 3
	.Sh STANDARDS