65 lines
1.8 KiB
Diff
65 lines
1.8 KiB
Diff
From d0fab10ed2a86698937e3c3fed2f10bd9bb5e731 Mon Sep 17 00:00:00 2001
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From: Bram Moolenaar <Bram@vim.org>
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Date: Thu, 20 Oct 2022 16:03:33 +0100
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Subject: [PATCH] patch 9.0.0805: filetype autocmd may cause freed memory
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access
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Problem: Filetype autocmd may cause freed memory access.
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Solution: Set the quickfix-busy flag while filling the buffer.
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---
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src/quickfix.c | 6 ++++++
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src/testdir/test_quickfix.vim | 15 +++++++++++++++
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2 files changed, 21 insertions(+)
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diff --git a/src/quickfix.c b/src/quickfix.c
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index a90611475ab1..f85fff56f23d 100644
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--- a/src/quickfix.c
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+++ b/src/quickfix.c
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@@ -4420,6 +4420,9 @@ qf_update_buffer(qf_info_T *qi, qfline_T *old_last)
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{
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linenr_T old_line_count = buf->b_ml.ml_line_count;
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+ // autocommands may cause trouble
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+ incr_quickfix_busy();
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+
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if (old_last == NULL)
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// set curwin/curbuf to buf and save a few things
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aucmd_prepbuf(&aco, buf);
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@@ -4441,6 +4444,9 @@ qf_update_buffer(qf_info_T *qi, qfline_T *old_last)
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// when the added lines are not visible.
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if ((win = qf_find_win(qi)) != NULL && old_line_count < win->w_botline)
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redraw_buf_later(buf, NOT_VALID);
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+
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+ // always called after incr_quickfix_busy()
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+ decr_quickfix_busy();
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}
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}
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diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
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index 2ee754b39690..bcaef5da175c 100644
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--- a/src/testdir/test_quickfix.vim
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+++ b/src/testdir/test_quickfix.vim
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@@ -4771,4 +4771,19 @@ func Test_lopen_bwipe()
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delfunc R
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endfunc
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+func Test_filetype_autocmd()
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+ " this changes the location list while it is in use to fill a buffer
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+ lexpr ''
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+ lopen
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+ augroup FT_loclist
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+ au FileType * call setloclist(0, [], 'f')
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+ augroup END
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+ silent! lolder
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+ lexpr ''
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+
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+ augroup FT_loclist
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+ au! FileType
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+ augroup END
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+endfunc
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+
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" vim: shiftwidth=2 sts=2 expandtab
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--
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2.33.0
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