termpty: fix potential NULL dereference. CID1367485

2016-12-19 23:38:32 +01:00 · 2016-12-19 23:38:32 +01:00 · 240a4a02d3
parent b9d5a55aa4
commit 240a4a02d3
1 changed files with 6 additions and 3 deletions
--- a/src/bin/termptyops.c
+++ b/src/bin/termptyops.c
@ -267,9 +267,12 @@ termpty_clear_line(Termpty *ty, Termpty_Clear mode, int limit)
 void
 termpty_clear_tabs_on_screen(Termpty *ty)
 {
-   memset(ty->tabs, 0,
-          DIV_ROUND_UP(ty->w, sizeof(unsigned int) * 8u)
-          * sizeof(unsigned int));
+   if (ty->tabs)
+     {
+        memset(ty->tabs, 0,
+               DIV_ROUND_UP(ty->w, sizeof(unsigned int) * 8u)
+               * sizeof(unsigned int));
+     }
 }