From 83541df6fad9bedcb6e0d2fc622a95ecb924880a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= <remi@remlab.net>
Date: Fri, 10 Sep 2021 18:58:16 +0300
Subject: [PATCH] include: map VLC_EGENERIC to INT_MIN

VLC_EGENERIC has no equivalent in <errno.h>, so it should not alias any
<errno.h> value. This maps it to INT_MIN. It works because -INT_MIN equals
INT_MAX + 1, which is out of range of `int`. As a reminder codes in
<errno.h> are positive integers.

The convoluted definition is to avoid pulling <limits.h> into
<vlc_common.h> and from there all over the code base.
---
 include/vlc_common.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/vlc_common.h b/include/vlc_common.h
index 32e029195d..6fb9f706e3 100644
--- a/include/vlc_common.h
+++ b/include/vlc_common.h
@@ -469,7 +469,7 @@ typedef union
 /** No error */
 #define VLC_SUCCESS        (-0)
 /** Unspecified error */
-#define VLC_EGENERIC       (-1)
+#define VLC_EGENERIC       (-2 * (1 << (sizeof (int) * 8 - 2))) /* INT_MIN */
 /** Not enough memory */
 #define VLC_ENOMEM         (-2)
 /** Timeout */