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From 85b6747abc15a7a81086db31289cf1b8b17e6cb1 Mon Sep 17 00:00:00 2001
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From: Bram Moolenaar <Bram@vim.org>
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Date: Tue, 25 Jan 2022 11:55:02 +0000
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Subject: [PATCH] patch 8.2.4214: illegal memory access with large 'tabstop' in
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Ex mode
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Problem: Illegal memory access with large 'tabstop' in Ex mode.
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Solution: Allocate enough memory.
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---
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src/ex_getln.c | 2 +-
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src/testdir/test_ex_mode.vim | 10 ++++++++++
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src/version.c | 2 ++
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3 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/src/ex_getln.c b/src/ex_getln.c
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index 5dc43d845..097b97eeb 100644
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--- a/src/ex_getln.c
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+++ b/src/ex_getln.c
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@@ -1513,7 +1513,7 @@ init_ccline(int firstc, int indent)
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ccline.cmdindent = (firstc > 0 ? indent : 0);
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// alloc initial ccline.cmdbuff
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- alloc_cmdbuff(exmode_active ? 250 : indent + 1);
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+ alloc_cmdbuff(indent + 50);
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if (ccline.cmdbuff == NULL)
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return FAIL;
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ccline.cmdlen = ccline.cmdpos = 0;
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diff --git a/src/testdir/test_ex_mode.vim b/src/testdir/test_ex_mode.vim
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index 7031115fc..2642a16d2 100644
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--- a/src/testdir/test_ex_mode.vim
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+++ b/src/testdir/test_ex_mode.vim
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@@ -241,4 +241,14 @@ func Test_ex_mode_count_overflow()
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call delete('Xexmodescript')
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endfunc
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+func Test_ex_mode_large_indent()
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+ new
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+ set ts=500 ai
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+ call setline(1, "\t")
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+ exe "normal gQi\<CR>."
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+ set ts=8 noai
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+ bwipe!
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+endfunc
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+
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+
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" vim: shiftwidth=2 sts=2 expandtab
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--
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2.34.1
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