Dominique Pellé wrote:
> I now understand why vim-7.3a crashes when undefining line
> #define U_USE_MALLOC 1 in "undo.c".
>
> u_alloc_line() and u_free_line(), which are used when
> U_USE_MALLOC is undefined, use buffers inside 'curbuf'.
> All allocations make during in u_read_undo() gets freed
> when calling "u_blockfree(curbuf);".
>
> Attached patch makes it work I think (I did not test in details)
> by calling u_blockfree(curbuf) earlier (before any call to U_ALLOC_LINE())
> in u_read_undo().
>
> However, I DON'T THINK IT'S A GOOD IDEA TO APPLY THIS PATCH
> anyway since if an error happens while loading the persistent undo file,
> the current undo information would be lost!
>
> It's best and a lot simpler to just remove all code in
> #define U_USE_MALLOC which is not currently used anyway
> and no longer valid.
I have deleted the !U_USE_MALLOC code. I don't see a good reason to
keep it around. So the crash you reported won't need to be fixed.
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