Check for snprintf truncation in pgtkterm

* src/pgtkterm.c (pgtk_enumerate_devices):
Abort if snprintf truncated.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/pgtkterm.c b/src/pgtkterm.c
index 413cbd86c0d..30679353c1b 100644
--- a/src/pgtkterm.c
+++ b/src/pgtkterm.c
@@ -183,9 +183,10 @@ pgtk_enumerate_devices (struct pgtk_display_info *dpyinfo,
           rec->seat = g_object_ref (seat);
           rec->device = GDK_DEVICE (t1->data);
 
-          snprintf (printbuf, 1026, "%u:%s",
-                    gdk_device_get_source (rec->device),
-                    gdk_device_get_name (rec->device));
+          int len = snprintf (printbuf, sizeof printbuf, "%u:%s",
+                              gdk_device_get_source (rec->device),
+                              gdk_device_get_name (rec->device));
+          eassert (len < sizeof printbuf);
 
           rec->name = build_string (printbuf);
           rec->next = dpyinfo->devices;