From 4351c8a336ecfa188b3620da2236de6fea228011 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Sat, 15 Jul 2017 00:37:37 -0400
Subject: don't call memcmp on null

---
 src/display.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/display.c')

diff --git a/src/display.c b/src/display.c
index 59b7b14..3b506d2 100644
--- a/src/display.c
+++ b/src/display.c
@@ -242,10 +242,15 @@ void runes_display_maybe_clear_selection(RunesTerm *t)
     char *contents;
     size_t len;
 
+    if (!display->has_selection) {
+        return;
+    }
+
     vt100_screen_get_string_plaintext(
         t->scr, &display->selection_start, &display->selection_end,
         &contents, &len);
     if (len != display->selection_len
+        || !contents
         || memcmp(contents, display->selection_contents, len)) {
         display->has_selection = 0;
     }
-- 
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