libc/stdlib/mallocr.c (unlink)

[J. Johnston]

Patch checked in, thanks.

-- Jeff J.

Earnie Boyd wrote:
> I've traced a SIGSEGV to this method.  The attached patch has resolved 
> this issue.
> 
> Earnie.
> 
> 
> ------------------------------------------------------------------------
> 
> 2003.02.18  Earnie Boyd  <earnie@users.sf.net>
> 
> 	* libc/stdlib/mallocr.c (unlink): Don't assign a value to a pointer
> 	with a NULL value.
> 
> Index: mallocr.c
> ===================================================================
> RCS file: /cvs/src/src/newlib/libc/stdlib/mallocr.c,v
> retrieving revision 1.9
> diff -u -3 -p -r1.9 mallocr.c
> --- mallocr.c	11 Oct 2002 10:28:30 -0000	1.9
> +++ mallocr.c	18 Feb 2003 21:40:05 -0000
> @@ -1936,8 +1936,8 @@ static void do_check_malloced_chunk(p, s
>  {                                                                             \
>    BK = P->bk;                                                                 \
>    FD = P->fd;                                                                 \
> -  FD->bk = BK;                                                                \
> -  BK->fd = FD;                                                                \
> +  if (FD) FD->bk = BK;                                                        \
> +  if (BK) BK->fd = FD;                                                        \
>  }                                                                             \
>  
>  /* Place p as the last remainder */