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sigreturn(2): Remove ancient compatibility warning about 4.2BSD.

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The HISTORY subsection still says that sigreturn() was added in 4.3BSD.
This commit is contained in:
Jilles Tjoelker 2013-05-25 13:59:40 +00:00
parent a6f45121b5
commit 0bbacb9c66
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=250982
1 changed files with 0 additions and 4 deletions
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lib/libc/sys/sigreturn.2
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@ -56,10 +56,6 @@ Execution resumes at the specified pc.
This system call is used by the trampoline code and
.Xr longjmp 3
when returning from a signal to the previously executing program.
.Sh NOTES
This system call is not available in
.Bx 4.2
hence it should not be used if backward compatibility is needed.
.Sh RETURN VALUES
If successful, the system call does not return.
Otherwise, a value of -1 is returned and