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Re: Dangerous use of alloca
From: |
Justus Winter |
Subject: |
Re: Dangerous use of alloca |
Date: |
Tue, 15 Mar 2016 14:39:00 +0100 |
User-agent: |
alot/0.3.8.dev |
Hi,
Quoting Agustina Arzille (2016-03-15 14:11:27)
> Hello, everyone.
>
> I was browsing some gnumach source files, and noticed some dangerous use
> of the gcc builtin 'alloca'. In the file kern/bootstrap.c, lines 212 and
> 228, we have the following statement:
>
> memcpy (alloca (len), ...)
Good catch. However, alloca is dangerous even if used correctly, and
is best be avoided. Would you be so kind to prepare a patch to that
end?
Thanks,
Justus