Re: [MacOS X] ncurses 5.7 and ptmalloc3

[BERTRAND Joel]

Thomas Dickey a écrit :
> On Sat, 8 May 2010, Joel Bertrand wrote:
>
> > Hello,
> >
> > I have found a bug in ncurses 5.7 that only occurs on MacOS X (10.5.6
> > x86) when ncurses is linked with ptmalloc3.
> > For some reasons I have to use ptmalloc3 in a portable program that
> > run fine on several Unix (NetBSD, FreeBSD, Solaris, Linux) and crashes
> > on MacOS X. I have bissected to find a minimal example that reproduces
> > the bug:
>
> > From the traceback, it seems to be related to the hashed-database option,
> which normally is not used on the other platforms (though it can be).
> I'll take a look to see if I can reproduce this (thanks).

	I think I have found... On MacOS X strdup is statically linked against 
malloc(). If you try to use another allocator, you have to use your own 
strdup(). For example, with ptmalloc3, it could be :

char * strdup(const char *s) {
     char * res = public_mALLOc(strlen(s)+1);
     if (res)
        strcpy(res, s);
     return res;
}

and ncurses runs fine with ptmalloc.

        Regards,

        JKB