Dominique Pelle wrote:
> I can reproduce a memory leak with Vim-7.2.293 (and older).
>
> Steps to reproduce:
>
> 1/ Create the following minimalistic script:
>
> $ cat leak.vim
>
> function Foo()
> redraw!
> return ''
> endfunction
>
> set hlsearch
> set laststatus=2
> set statusline=%{Foo()}
>
> 2/ Start Vim with Valgrind using:
>
> $ cd vim7/src
> $ valgrind --leak-check=yes ./vim \
> --noplugin \
> -u leak.vim buffer.c \
> -c 'exe "normal /to\<CR>"' 2> vg.log
>
> 3/ Press n several times (press 3 times for example) to go to next
> match several times.
>
> 4/ Quit Vim with:
>
> :q!
>
> 5/ Observe in vg.log the following memory leaks:
>
> ==15737== 164 bytes in 4 blocks are definitely lost in loss record 100 of 113
> ==15737== at 0x402603E: malloc (vg_replace_malloc.c:207)
> ==15737== by 0x8115C72: lalloc (misc2.c:866)
> ==15737== by 0x815AAF7: vim_regcomp (regexp.c:1021)
> ==15737== by 0x81747EA: search_regcomp (search.c:216)
> ==15737== by 0x817505C: last_pat_prog (search.c:501)
> ==15737== by 0x816F71E: start_search_hl (screen.c:6590)
> ==15737== by 0x816488C: update_screen (screen.c:505)
> ==15737== by 0x80E7C97: main_loop (main.c:1121)
> ==15737== by 0x80E792D: main (main.c:948)
>
> One block is leaked when doing the first search with /to then
> other blocks are leaked every time you press n to go to next
> match. In above example I pressed n 3 times so there was 1+3=4
> leaks in total.
>
> Attached patch fixes it.
Thanks!
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