main - cov: guard index

[Zdenek Kabelac]

Gitweb:        https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=b7edda8a98281b6eb400fe...
Commit:        b7edda8a98281b6eb400fe41f2498e031bce7ccf
Parent:        d4994915015498bc0382fc6624d2f843f865ae51
Author:        Zdenek Kabelac 
AuthorDate:    Tue Jul 27 15:53:48 2021 +0200
Committer:     Zdenek Kabelac 
CommitterDate: Wed Jul 28 00:49:28 2021 +0200

cov: guard index

Analyzer wants explicit protect to not underflow index.
---
 lib/activate/activate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/activate/activate.c b/lib/activate/activate.c
index 94fc9441d..b44efc617 100644
--- a/lib/activate/activate.c
+++ b/lib/activate/activate.c
@@ -563,7 +563,7 @@ int module_present(struct cmd_context *cmd, const char *target_name)
    		    dm_sysfs_dir(), target_name);

if (i > 0) {
-		while (path[--i] != '/')  /* stop on dm_ */
+		while ((i > 0) && path[--i] != '/')  /* stop on dm_ */
    		if (path[i] == '-')
    			path[i] = '_'; /* replace '-' with '_' */