# HG changeset patch
# User Bram Moolenaar <bram@vim.org>
# Date 1439300769 -7200
# Node ID fc099c55a36a2a6abacbb0542d94a4e9ebd40cfb
# Parent  0b27ef95a7a00b784207d84096cf149cffa1d931
patch 7.4.815
Problem:    Invalid memory access when doing ":call g:".
Solution:   Check for an empty name. (Dominique Pelle)

diff --git a/src/eval.c b/src/eval.c
--- a/src/eval.c
+++ b/src/eval.c
@@ -21371,6 +21371,7 @@ find_var_in_ht(ht, htname, varname, no_a
 
 /*
  * Find the hashtab used for a variable name.
+ * Return NULL if the name is not valid.
  * Set "varname" to the start of name without ':'.
  */
     static hashtab_T *
@@ -21380,6 +21381,8 @@ find_var_ht(name, varname)
 {
     hashitem_T	*hi;
 
+    if (name[0] == NUL)
+	return NULL;
     if (name[1] != ':')
     {
 	/* The name must not start with a colon or #. */
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    815,
+/**/
     814,
 /**/
     813,