Dominique Pelle wrote:
> Using valgrind, I observe the following error with Vim-7.2.32 when
> exiting Vim. It happens only when Vim is compiled with -DEXITFREE
> so it's a minor bug, since Vim is normally not compiled with -DEXITFREE.
>
> Doing "vim -u NONE -c q" is enough to trigger it.
>
> It did not happen with Vim-7.2.30. So it's introduced
> by Vim-7.2.{31,32}.
>
> ==30738== Invalid read of size 4
> ==30738== at 0x806E81A: set_ref_in_ht (eval.c:6592)
> ==30738== by 0x807D751: garbage_collect (eval.c:6536)
> ==30738== by 0x808A4A4: eval_clear (eval.c:874)
> ==30738== by 0x81006FD: free_all_mem (misc2.c:1131)
> ==30738== by 0x813174F: mch_exit (os_unix.c:3057)
> ==30738== by 0x809E690: ex_quit (ex_docmd.c:6228)
> ==30738== by 0x80A63CB: do_one_cmd (ex_docmd.c:2622)
> ==30738== by 0x80A77BE: do_cmdline (ex_docmd.c:1096)
> ==30738== by 0x811423E: nv_colon (normal.c:5217)
> ==30738== by 0x8116C53: normal_cmd (normal.c:1184)
> ==30738== by 0x80DA03F: main_loop (main.c:1180)
> ==30738== by 0x80DD637: main (main.c:939)
> ==30738== Address 0x4c18ae4 is 4 bytes inside a block of size 2,048 free'd
> ==30738== at 0x402268C: free (vg_replace_malloc.c:323)
> ==30738== by 0x808A42C: eval_clear (eval.c:858)
> ==30738== by 0x81006FD: free_all_mem (misc2.c:1131)
> ==30738== by 0x813174F: mch_exit (os_unix.c:3057)
> ==30738== by 0x809E690: ex_quit (ex_docmd.c:6228)
> ==30738== by 0x80A63CB: do_one_cmd (ex_docmd.c:2622)
> ==30738== by 0x80A77BE: do_cmdline (ex_docmd.c:1096)
> ==30738== by 0x811423E: nv_colon (normal.c:5217)
> ==30738== by 0x8116C53: normal_cmd (normal.c:1184)
> ==30738== by 0x80DA03F: main_loop (main.c:1180)
> ==30738== by 0x80DD637: main (main.c:939)
>
> Line eval.c:6536 where error happens is introduced by patch 7.2.31.
>
> I attach a patch which fixes it, but please double check
> that it's correct: calling hash_init(&vimvarht) after
> hash_clear(&vimvarht) is needed to prevent
> garbage_collect() from using the freed hash later.
Thanks. One more for the todo list.
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