Re: [PATCH] Stop docproc segfaulting when SRCTREE isn't set.

[Randy Dunlap <randy.dunlap@oracle.com>]

Ahmed S. Darwish wrote:
> On Tue, Oct 09, 2007 at 08:55:00AM -0700, Randy Dunlap wrote:
> > On Tue, 9 Oct 2007 15:03:15 +0200 Ahmed S. Darwish wrote:
> >
> > > Hi Rob,
> > >
> > > On Tue, Oct 09, 2007 at 01:25:18AM -0500, Rob Landley wrote:
> > > [...]
> > > >  	FILE * infile;
> > > > +
> > > > +	srctree = getenv("SRCTREE");
> > > > +	if (!srctree) srctree = getcwd(NULL,0);
> > > >  	if (argc != 3) {
> > > >  		usage();
> > > >  		exit(1);
> > > $ man getcwd
> > >
> > >  char *getcwd(char *buf, size_t size);
> > >       
> > >  As an extension to the POSIX.1 standard, Linux (libc4, libc5, glibc) getcwd() 
> > >  allocates the buffer dynamically using malloc() if buf is NULL on call.
> > >
> > > Shouldn't "srctree" be free()ed in case getenv("SRCTREE") failed ?
> > What is there to free() at that point?  If getenv() fails (i.e.,
> > the env. variable is not found), it returns NULL.
> > or do I need another cup of coffee?
>
> I meant if getenv() failed, "srctree = getcwd(NULL, 0)" will let 
> "srctree" point to a _ malloc()ed _ buffer representing PWD. 
> As said in the manpage, this buffer needs to be free()ed after usage.
> Right or I'm the one who needs that cup of coffee :) ?

so it needs to be freed at program termination, is that what you are
saying?  That will happen automatically (along with any open files being
closed, etc.).

--
~Randy
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