From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 19 Mar 2025 00:38:36 +0000 (+0900)
Subject: bitfield: check if specified index is non-negative
X-Git-Tag: v258-rc1~1042^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c995855266fa8355cf7ed8133e581360b38bad83;p=thirdparty%2Fsystemd.git

bitfield: check if specified index is non-negative

Hopefully silences false-positive warnings by Coverity e.g. CID#1590746.
---

diff --git a/src/basic/bitfield.h b/src/basic/bitfield.h
index 048e08d7534..c6eaaa484fe 100644
--- a/src/basic/bitfield.h
+++ b/src/basic/bitfield.h
@@ -7,6 +7,7 @@
 #define _INDEX_TO_MASK(type, i, uniq)                                   \
         ({                                                              \
                 int UNIQ_T(_i, uniq) = (i);                             \
+                assert(UNIQ_T(_i, uniq) >= 0);                          \
                 assert(UNIQ_T(_i, uniq) < (int)sizeof(type) * 8);       \
                 ((type)1) << UNIQ_T(_i, uniq);                          \
         })