Re: Help with getting started on Mac OS X

[Carl Lindberg]

> I'm trying to setup gnats 3.999.2 on a Mac OS X Server but I'm having a
> few problems, and I'm wondering if anyone else has managed to get gnats
> up and running on X Server 10.2.5.
>
> When I build gnats, I get a LOT of errors like these
>
> ...
> regex.h:434:3: style of line directive is a GCC extension

	This is because of the -ansi and -pedantic flags that are present in 
the Makefiles.  While these are useful during development, they should 
probably be turned off for releases -- many times the system headers 
themselves will cause piles of warnings.  It should build fine though.


> In the end, gnatsd did compile, but when inetd tries to start it, I it
> crashes and I get a backtrace like this:
>
> Thread 0 Crashed:
>   #0   0x9007472c in memmove
>   #1   0x0000fdf8 in xstrndup (misc.c:398)
>   #2   0x0001a92c in getOneAddress (mail.c:236)
>   #3   0x0001a998 in get_responsible_addr (mail.c:251)
>   #4   0x00003c64 in gnatsdChdb (cmds.c:662)
>   #5   0x00002d20 in main (gnatsd.c:1044)
>   #6   0x0000186c in _start (crt.c:267)
>   #7   0x000016ec in start
        This is a bug in mail.c; here's a patch:

*** mail.c      25 Nov 2002 13:58:33 -0000      1.20
--- mail.c      3 May 2003 22:42:52 -0000
***************
*** 226,232 ****
    addrEnd = addr;

    /* ignore any ending white space */
!   while (addr >= addrStart && isspace((int)(unsigned 
char)*(addr-sizeof(*addr))))
      {
        addr--;
      }
--- 226,232 ----
    addrEnd = addr;

    /* ignore any ending white space */
!   while (addr > addrStart && isspace((int)(unsigned 
char)*(addr-sizeof(*addr))))
      {
        addr--;
      }



The existing code allows a comparison of the character before the 
'addrStart' address, which is bad.  On MacOS X, that character just so 
happens to be a space, and addr is decremented one too many times.  The 
result is a -1 being passed to xstrndup.


-Carl Lindberg