Bjorn Winckler wrote:
> The attached patch fixes a problem where Vim would crash when using
> the Ruby interpreter on Mac OS X 10.7.
>
> The problem is that a call to alloca(size) with len=0 on 10.7
> generates bad code which causes the call stack to be messed up. This
> patch fixes the problem by checking the size before allocating with
> alloca(). I was tempted to get rid of the alloca() call all together
> and use malloc/free instead, but I left that out of the patch.
>
> I did not make the patch Mac-specific (even though I've only heard of
> this problem occurring on Mac OS X 10.7) as I think it is a bad idea
> to try and allocate 0 bytes in the first place so all platforms are
> covered by the patch.
Thanks. I'll put it on the todo list.
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