Re: glibc utility function errors

[Matt Bragano <maestro485 comcast net>]

Murray Cumming wrote:
> On Sun, 2006-04-23 at 21:03 -0400, Matt Bragano wrote:
>   
> > Every time I use the glibc utility functions (Glib::get_home_directory() 
> > specifically), I receive this runtime error:
> >     
>
> The library is called glibmm, not glibc. Also, I think you mean
> Glib::get_home_dir().
>
>   
> > *** glibc detected *** double free or corruption (out): 0x080827f8 ***
> >     
>
> valgrind might help you to detect the cause of this kind of problem. I
> guess that it is caused by some other part of your program.
>
>   
> > However, if I replace Glib::get_home_directory() with a hard coded path 
> > (i.e. /home/matt/) everything seems to work fine.
> >
> > I'm fairly new to both c++ and gtkmm, so please excuse me if this is an 
> > obvious thing or the wrong list.
> >     
>
> I can't see any problem in the implementation of that method:
>
> std::string get_home_dir()
> {
>   const char *const value = g_get_home_dir();
>   return (value) ? std::string(value) : std::string();
> }
>
> But I suppose there could be a problem in g_get_home_dir(). If you can
> reduce this to a simple test case then we can investigate.
>
>   
Sorry for the late response.  I went ahead and used the implementation 
rather than the get_home_dir() method like so:

const gchar *const phome = g_get_home_dir();

and it worked just fine.  I suspect this is due to the fact that I built 
gtkmm from the sources rather than using a distro-specific package since 
I couldn't find any good Slackware packages.  Other than that I haven't 
had any troubles, and I'm not familiar enough with c++ to dig up the 
true source of the problem.  If I happen to come across the reason for 
this behavior I'll let you know.

Also, if anyone knows where to get a solid build for Slackware 10.2 I'd 
be glad to give that a shot and see if it clears this up.

Thanks,
Matt Bragano