fix(channel): throw error if sending to internal channel w/o terminal

Prevent SIGABRT when sending to a channel created by nvim_open_term()
after the associated terminal has been deleted.

1 files changed, 10 insertions, 0 deletions

diff --git a/test/functional/core/channels_spec.lua b/test/functional/core/channels_spec.lua
index 93dec9fb35..e5ded6428f 100644
--- a/test/functional/core/channels_spec.lua
+++ b/test/functional/core/channels_spec.lua
@@ -281,4 +281,14 @@ describe('channels', function()
     -- works correctly with no output
     eq({"notification", "exit", {id, 1, {''}}}, next_msg())
   end)
+
+  it('should throw error when writing to a channel associated with a deleted terminal', function()
+    source([[
+      let id = nvim_open_term(0, {})
+      bdelete!
+      let v:errmsg = ''
+      silent! call chansend(id, 'test')
+    ]])
+    eq("Can't send data to closed stream", eval('v:errmsg'))
+  end)
 end)