Re: Does malloc() have to zero the block?

[Ralph Hempel <rhempel@...>]

Klaus Ripke wrote:
> On Wed, Sep 19, 2007 at 03:02:07PM -0400, Ralph Hempel wrote:
> > What are Lua's expected semantics of:
> what makes you assume that Lua expects anything other than:
>
> > 1. realloc() an existing block to a size of 0 bytes?
> http://www.opengroup.org/onlinepubs/007908775/xsh/realloc.html :
> "If size is 0 and ptr is not a null pointer, the object pointed to is freed."
> In plain english: the expected semantics is a call to free.
> A null pointer save free, kinda.
>
> > 2. realloc() a new block to a size of 0 bytes?
> "If ptr is a null pointer, realloc() behaves like malloc() for the specified size."
>
> read on http://www.opengroup.org/onlinepubs/007908775/xsh/malloc.html :
> "If the size of the space requested is 0, the behaviour is implementation-dependent; the value returned will be either a null pointer or a unique pointer."
>
> Just like Roberto said.
>
> What's the issue?

There's no issue. I have a Lua interpreter implemented on a the LEGO
MINDSTORMS NXT, which is a non-POSIX platform and it's crashing
occasionally.

I just want to be sure I'm covering everything.

Ralph