commit a890f5e34887bff7616bdb4b9ee0bf98c8d2a8f0
author Bram Moolenaar <Bram@vim.org> Sun Jun 12 23:03:19 2016 +0200
committer Bram Moolenaar <Bram@vim.org> Sun Jun 12 23:03:19 2016 +0200
tree 6dd19ec64d2d9516eb07c09478294ca1a6eba649
parent c95a302a4c42ec8230473cd4a5e0064d0a143aa8

patch 7.4.1926
Problem:    Possible crash with many history items.
Solution:   Avoid the index going past the last item.

src/ex_getln.c

diff --git a/src/ex_getln.c b/src/ex_getln.c
index fd47ef3..2f5793a 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -6448,7 +6448,7 @@
 	else
 	    clear_hist_entry(&new_hist[i]);
     }
-    hisidx[type] = len - 1;
+    hisidx[type] = (i < len ? i : len) - 1;
 
     /* Free what is not kept. */
     for (i = 0; i < viminfo_hisidx[type]; i++)