X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;ds=sidebyside;f=scrotwm.c;h=499ee6dacd0f9a09bd3e2182adb1c0da456b9121;hb=948314b98e7b6eccd9e2b99294190101b043c909;hp=2d10ceb0ccfc717807c3fe5d655659a777f85c37;hpb=5f8a010ab295ed72a1f432a3c47fe804dc87e76d;p=spectrwm.git

diff --git a/scrotwm.c b/scrotwm.c
index 2d10ceb..499ee6d 100644
--- a/scrotwm.c
+++ b/scrotwm.c
@@ -1063,6 +1063,9 @@ find_pid(long pid)
 
 	DNPRINTF(SWM_D_MISC, "find_pid: %lu\n", pid);
 
+	if (pid == 0)
+		return (NULL);
+
 	TAILQ_FOREACH(p, &pidlist, entry) {
 		if (p->pid == pid)
 			return (p);
@@ -4761,7 +4764,7 @@ window_get_pid(Window win)
 	int			actual_format_return = 0;
 	unsigned long		nitems_return = 0;
 	unsigned long		bytes_after_return = 0;
-	long			*pid = 0;
+	long			*pid = NULL;
 	long			ret = 0;
 
 	if (XGetWindowProperty(display, win,
@@ -4770,8 +4773,12 @@ window_get_pid(Window win)
 	    &nitems_return, &bytes_after_return,
 	    (unsigned char**)(void*)&pid) != Success)
 		return (0);
+	if (actual_type_return != XA_CARDINAL)
+		return (0);
+	if (pid == NULL)
+		return (0);
 
-	ret = pid[0];
+	ret = *pid;
 	XFree(pid);
 
 	return (ret);