From: Bram Moolenaar <Bram@vim.org>
Date: Thu, 2 Mar 2017 21:11:33 +0000 (+0100)
Subject: patch 8.0.0399: crash when using balloon_show() when not supported
X-Git-Tag: v8.0.0399
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=caf6434ac937cf26050276d7b474be2d2d6a06b3;p=vim

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
index 70b90ad17..20c5f8975 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -1375,7 +1375,8 @@ f_atan2(typval_T *argvars, typval_T *rettv)
     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
index 218567ff4..eeeb4e325 100644
--- 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
index c1f426cb3..5a10b4772 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    399,
 /**/
     398,
 /**/