diff --git a/src/testdir/dumps/Test_pum_matchins_11.dump b/src/testdir/dumps/Test_pum_matchins_11.dump
new file mode 100644
index 0000000..a44a6ee
--- /dev/null
+++ b/src/testdir/dumps/Test_pum_matchins_11.dump
@@ -0,0 +1,20 @@
+|i+0&#ffffff0|n|f|o| @70
+|~+0#4040ff13&| @73
+|~| @73
+|[+1#0000000&|S|c|r|a|t|c|h|]| |[|P|r|e|v|i|e|w|]| @37|1|,|1| @11|A|l@1
+|f+0&&|o@1> @71
+|f+0#0000001#e0e0e08|o@1| @11| +0#4040ff13#ffffff0@59
+|b+0#0000001#ffd7ff255|a|r| @11| +0#4040ff13#ffffff0@59
+|你*0#0000001#ffd7ff255|好| +&@10| +0#4040ff13#ffffff0@59
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+3#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|1|,|1| @11|A|l@1
+|-+2&&@1| |O|m|n|i| |c|o|m|p|l|e|t|i|o|n| |(|^|O|^|N|^|P|)| |m+0#00e0003&|a|t|c|h| |1| |o|f| |3| +0#0000000&@34
diff --git a/src/testdir/test_popup.vim b/src/testdir/test_popup.vim
index 8f053fa..729fbec 100644
--- a/src/testdir/test_popup.vim
+++ b/src/testdir/test_popup.vim
@@ -1715,11 +1715,15 @@
 func Test_pum_matchins_highlight()
   CheckScreendump
   let lines =<< trim END
+    let g:change = 0
     func Omni_test(findstart, base)
       if a:findstart
         return col(".")
       endif
-      return [#{word: "foo"}, #{word: "bar"}, #{word: "你好"}]
+      if g:change == 0
+        return [#{word: "foo"}, #{word: "bar"}, #{word: "你好"}]
+      endif
+      return [#{word: "foo", info: "info"}, #{word: "bar"}, #{word: "你好"}]
     endfunc
     set omnifunc=Omni_test
     hi ComplMatchIns ctermfg=red
@@ -1766,6 +1770,10 @@
   call VerifyScreenDump(buf, 'Test_pum_matchins_10', {})
   call term_sendkeys(buf, "\<Esc>")
 
+  call term_sendkeys(buf, ":let g:change=1\<CR>S\<C-X>\<C-O>")
+  call VerifyScreenDump(buf, 'Test_pum_matchins_11', {})
+  call term_sendkeys(buf, "\<Esc>")
+
   call StopVimInTerminal(buf)
 endfunc
 
@@ -1811,4 +1819,15 @@
   call StopVimInTerminal(buf)
 endfunc
 
+" this used to crash
+func Test_popup_completion_many_ctrlp()
+  new
+  let candidates=repeat(['a0'], 99)
+  call setline(1, candidates)
+  exe ":norm! VGg\<C-A>"
+  norm! G
+  call feedkeys("o" .. repeat("\<c-p>", 100), 'tx')
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab