From: Richard Palethorpe <rpalethorpe@suse.com>
Date: Wed, 28 Jul 2021 20:19:56 +0000 (+0200)
Subject: wait.2: Add ESRCH for when pid == INT_MIN
X-Git-Tag: man-pages-5.13~161
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=136ae439fb6ce5e8a2f87e90ea15bbebf732a8e6;p=thirdparty%2Fman-pages.git

wait.2: Add ESRCH for when pid == INT_MIN

Please see upstream commit:

 commit dd83c161fbcc5d8be637ab159c0de015cbff5ba4
 Author: zhongjiang <zhongjiang@huawei.com>
 Date:   Mon Jul 10 15:53:01 2017 -0700

     kernel/exit.c: avoid undefined behaviour when calling wait4()

It avoids negating INT_MIN by returning early with ESRCH.

Signed-off-by: Richard Palethorpe <rpalethorpe@suse.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---

diff --git a/man2/wait.2 b/man2/wait.2
index 5ae955b3fd..63d872ee63 100644
--- a/man2/wait.2
+++ b/man2/wait.2
@@ -455,6 +455,15 @@ was caught; see
 The
 .I options
 argument was invalid.
+.TP
+.B ESRCH
+(for
+.BR wait ()
+or
+.BR waitpid ())
+.I pid
+is equal to
+.I INT_MIN
 .SH CONFORMING TO
 SVr4, 4.3BSD, POSIX.1-2001.
 .SH NOTES