[U-Boot] [PATCH] Prevent malloc with size 0

Wolfgang Denk
2010-10-21T12:02:39Z

Dear Joakim Tjernlund,

In message <OF9AD66E3F.36E9C654-ONC12577C3.004134FD-C12577C3.0041A007@transmode.se> you wrote:
>
> > Of course we could return some valid pointer like glibc does, i. e.
> > implement something like
> >
> > if (size == 0)
> > size = 8;
> >
> > or so. Do you think that would be better?
>
> Better than NULL, but best would be a ptr that will SEGV if
> you try to defer it. Not the easiest to impl., perhaps
> ~0 will do?

The pointers you get from glibc can be read and written - they don't
segfault either (and usually we cannot do this in U-Boot, as most
systems have the MMU off).

Best regards,

Wolfgang Denk

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