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

[Mike Frysinger <vapier@gentoo.org>]

On Thursday, October 21, 2010 07:45:10 Joakim Tjernlund wrote:
> Wolfgang Denk wrote on 2010/10/21 13:32:54:
> > Joakim Tjernlund you wrote:
> > > > -  if ((long)bytes < 0) return 0;
> > > > +  if ((long)bytes <= 0) return 0;
> > > 
> > > I think you should return some impossible ptr value =! NULL
> > > Size 0 not really an error.
> > 
> > It is legal for malloc() to return NULL in case of size==0,
> > and for the sake of simplicity I recommend we do just that.
> 
> Yes, but not very useful. Glibc does not return NULL

it is useful for malloc(0) == NULL.  the glibc behavior is downright 
obnoxious.  we disable this for uClibc and dont see problems.  if anything, we 
catch accidental programming mistakes which then get fixed.

why exactly do you want malloc(0) to return valid memory ?  i would rather 
have u-boot return an error.
-mike
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