Re: [Qemu-devel] [Qemu-trivial] [PATCH v7] slirp/misc: Use g_malloc() instead of malloc()

[Jeff Cody <jcody@redhat.com>]

On Mon, Aug 18, 2014 at 03:32:21PM +0400, Michael Tokarev wrote:
> 18.08.2014 11:51, zhanghailiang пишет:
> > Here we don't check the return value of malloc() which may fail.
> > Use the g_malloc() instead, which will abort the program when
> > there is not enough memory.
> > 
> > Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
> > Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
> > ---
> >  slirp/misc.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/slirp/misc.c b/slirp/misc.c
> > index b8eb74c..f7fe497 100644
> > --- a/slirp/misc.c
> > +++ b/slirp/misc.c
> > @@ -54,7 +54,7 @@ int add_exec(struct ex_list **ex_ptr, int do_pty, char *exec,
> >  	}
> >  
> >  	tmp_ptr = *ex_ptr;
> > -	*ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list));
> > +	*ex_ptr = (struct ex_list *)g_malloc(sizeof(struct ex_list));
> 
> There's a convinient macro in glib, g_new(typename, numelts).  Also
> there's a less commonly used g_renew() which is like realloc, but it
> is not applicable here.
> 

If you are going to respin anyway, I recommend dropping the
superfluous (struct ex_list *) cast here as well.

> >  	(*ex_ptr)->ex_fport = port;
> >  	(*ex_ptr)->ex_addr = addr;
> >  	(*ex_ptr)->ex_pty = do_pty;
> > @@ -235,7 +235,7 @@ strdup(str)
> >  {
> >  	char *bptr;
> >  
> > -	bptr = (char *)malloc(strlen(str)+1);
> > +	bptr = (char *)g_malloc(strlen(str)+1);
> >  	strcpy(bptr, str);
> >  
> >  	return bptr;
> 
> Oh.  And this one should be removed completely.  It is a reimplementation
> of strdup() for system which lacks it.  This code should go, we don't build
> on such a system anyway and we always have g_strdup().  There's one more
> usage of strdup() in this file, btw.
> 
> I'm sorry for being so picky, and you're already at v7, but heck.. We should
> be more active at reviewing patches :)
> 
> Thanks,
> 
> /mjt
>