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

Wolfgang Denk
2010-10-21T11:51:26Z

Dear Joakim Tjernlund,

In message <OFD5ABFC5E.96E88C93-ONC12577C3.00406E0E-C12577C3.00408F11@transmode.se> you wrote:
>
> > 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

Maybe not in the current implementation, and not on the architecture
you checked. Current doc reads: "If size is 0, then malloc() returns
either NULL, or a unique pointer value that can later be successfully
passed to free()."

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?

Best regards,

Wolfgang Denk

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