Ken Takata wrote:
> 2013/05/12 Sun 0:36:43 UTC+9 tyru wrote:
> > Hi list.
> >
> > I have read a blog post about gcc extension.
> > http://mkosaki.blog46.fc2.com/blog-entry-1228.html (Japanese)
> >
> > The blog title says "_FORTIFY_SOURCE without
> > __attribute__((alloc_size)) doesn't make sense" .
> >
> > I've seen some "_FORTIFY_SOURCE" outputs while compiling Vim.
> > Should we add __attribute__((alloc_size)) to functions using malloc(),
> > and calloc() ?
> > (original post doesn't say about calloc(), though)
> > I also found alloc(), lalloc() in misc2.c which should be related for this.
> >
> > I don't understand Vim build system well yet.
> > I hope someone would create a patch for this...
> >
> > Thanks
>
> Here is a good example which uses __attribute__((alloc_size)).
> See the following commit to the Ruby's source code:
> http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/include/ruby/defines.h?r1=40572&r2=40571&pathrev=40572
> This commit was written by the author of the blog post.
>
> However we can't apply this method directly to the Vim's source code,
> because we use cproto to generate *.pro.
Please don't waste time on it. For Vim _FORTIFY_SOURCE doesn't really
work. There are many structures that are allocated larger than they are
defined. It will just be a lot of work to create false alarms.
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