From f637ed601195685e23d2b60deb3b40ed96919978 Mon Sep 17 00:00:00 2001
From: Jiajie Chen <c@jia.je>
Date: Tue, 17 Jan 2023 09:28:21 +0800
Subject: [PATCH] [linux] Fix potential null pointer argument to strncpy,
 reported by clang-analyzer

---
 arg.c                  | 2 +-
 dialects/linux/dproc.c | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arg.c b/arg.c
index 467e774..d001303 100644
--- a/arg.c
+++ b/arg.c
@@ -2083,7 +2083,7 @@ enter_state_spec(ss)
 		*cp = '\0';
 		cp++;
 	    }
-	    if (!(len = (size_t)(ne - ns))) {
+	    if (!(size_t)(ne - ns)) {
 		(void) fprintf(stderr, "%s: NULL %s state name in: %s\n",
 		    Pn, pr, ss);
 		err = 1;
diff --git a/dialects/linux/dproc.c b/dialects/linux/dproc.c
index 17025de..a1d1276 100644
--- a/dialects/linux/dproc.c
+++ b/dialects/linux/dproc.c
@@ -356,7 +356,9 @@ gather_proc_info()
 	 * options work properly.
 	 */
 	    else if (!IgnTasks && (Selflags & SELTASK)) {
-		strncpy(cmdbuf, cmd, sizeof(cmdbuf) - 1);
+		if (cmd) {
+		    strncpy(cmdbuf, cmd, sizeof(cmdbuf) - 1);
+		}
 		cmdbuf[sizeof(cmdbuf) - 1] = '\0';
 		cmd = cmdbuf;
 		(void) make_proc_path(pidpath, n, &taskpath, &taskpathl,
-- 
2.27.0