patch 8.0.0530: buffer overflow when 'columns' is very bigv8.0.0530

Problem:    Buffer overflow when 'columns' is very big. (Nikolai Pavlov)
Solution:   Correctly compute where to truncate.  Fix translation.
            (closes #1600)

1 files changed, 21 insertions, 0 deletions

diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
index 344c12664c..b43f84ba2f 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -1322,3 +1322,24 @@ func! Test_edit_rightleft()
   set norightleft
   bw!
 endfunc
+
+func Test_edit_complete_very_long_name()
+  let save_columns = &columns
+  set columns=5000
+  call assert_equal(5000, &columns)
+  set noswapfile
+  let dirname = getcwd() . "/Xdir"
+  let longdirname = dirname . repeat('/' . repeat('d', 255), 4)
+  let longfilename = longdirname . '/' . repeat('a', 255)
+  call mkdir(longdirname, 'p')
+  call writefile(['Totum', 'Table'], longfilename)
+  new
+  exe "next Xfile " . longfilename
+  exe "normal iT\<C-N>"
+
+  bwipe!
+  exe 'bwipe! ' . longfilename
+  call delete(dirname, 'rf')
+  let &columns = save_columns
+  set swapfile&
+endfunc