# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1488489304 -3600
# Node ID 50f3e37bc2108c8dc7badea8f3615d59c0184352
# Parent  05daa23e1ecf158401ed45476954147dc3122389
patch 8.0.0399: crash when using balloon_show() when not supported

commit https://github.com/vim/vim/commit/caf6434ac937cf26050276d7b474be2d2d6a06b3
Author: Bram Moolenaar <Bram@vim.org>
Date:   Thu Mar 2 22:11:33 2017 +0100

    patch 8.0.0399: crash when using balloon_show() when not supported

    Problem:    Crash when using balloon_show() when not supported. (Hirohito
                Higashi)
    Solution:   Check for balloonEval not to be NULL. (Ken Takata)

diff --git a/src/evalfunc.c b/src/evalfunc.c
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -1375,7 +1375,8 @@ f_atan2(typval_T *argvars, typval_T *ret
     static void
 f_balloon_show(typval_T *argvars, typval_T *rettv UNUSED)
 {
-    gui_mch_post_balloon(balloonEval, get_tv_string_chk(&argvars[0]));
+    if (balloonEval != NULL)
+	gui_mch_post_balloon(balloonEval, get_tv_string_chk(&argvars[0]));
 }
 #endif
 
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -466,3 +466,8 @@ func Test_getbufvar()
 
   set fileformats&
 endfunc
+
+func Test_balloon_show()
+  " This won't do anything but must not crash either.
+  call balloon_show('hi!')
+endfunc
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    399,
+/**/
     398,
 /**/
     397,