neovim

commit 4e25b1a675976ed238752d547dc05aaaef38af29
parent 7c6a9c55890f77fc7b571de649c232d70db3a01a
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Wed, 24 Apr 2024 19:52:01 +0800

vim-patch:8.2.4647: "source" can read past end of copied line

Problem:    "source" can read past end of copied line.
Solution:   Add a terminating NUL.

https://github.com/vim/vim/commit/2bdad6126778f907c0b98002bfebf0e611a3f5db

Co-authored-by: Bram Moolenaar <Bram@vim.org>

Diffstat:
M
src/nvim/runtime.c
 | 
2
++
M
test/old/testdir/test_source.vim
 | 
9
+++++++++

2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/src/nvim/runtime.c b/src/nvim/runtime.c
@@ -2723,7 +2723,9 @@ static char *get_one_sourceline(source_cookie_T *sp)
       }
       ga_concat(&ga, ((char **)sp->buflines.ga_data)[sp->buf_lnum]);
       sp->buf_lnum++;
+      ga_grow(&ga, 1);
       buf = (char *)ga.ga_data;
+      buf[ga.ga_len++] = NUL;
     } else {
       buf = ga.ga_data;
 retry:
diff --git a/test/old/testdir/test_source.vim b/test/old/testdir/test_source.vim
@@ -638,4 +638,13 @@ func Test_source_buffer_vim9()
   %bw!
 endfunc
 
+func Test_source_buffer_long_line()
+  " This was reading past the end of the line.
+  new
+  norm300gr0
+  so
+  bwipe!
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab