Allow libnosys/sbrk.c to be compiled in a minimal environment.

[Nick Clifton]

Hi Guys,

  I am applying the patch below (pre-approved by Jeff) to allow
  libgloss/libnosys/sbrk.c to be compiled in a minimal environment,
  where not all of the system header files are available.  The patch
  also fixes up the formatting in the file and changes the return type
  of _sbrk() to void * in order to match the prototype in system
  header files.

Cheers
        Nick

PS.  Actually I am only committing the ChangeLog entry, the patch
itself was checked in by accident when I was committing a change for
the xstormy16 port.  Sorry about that.

2003-04-29  Nick Clifton  <nickc@redhat.com>

	* libnosys/sbrk.c: Remove unnecessary #include's.
	Change return type of _sbrk() function to void * to match
	definition in system header files.
	Fix formatting.

--- /notnfs/mcr/req-6109/devo/libgloss/libnosys/sbrk.c	1998-10-06 15:25:31.000000000 -0400
+++ /notnfs/mcr/req-6109/src/libgloss/libnosys/sbrk.c	2003-04-24 08:36:08.000000000 -0400
@@ -1,27 +1,18 @@
-/*
- * Version of sbrk for no operating system.
- */
+/* Version of sbrk for no operating system.  */

-#include "config.h"
-#include <_ansi.h>
-#include <_syslist.h>
-#include <sys/types.h>
-#include <errno.h>
-#undef errno
-extern int errno;
-
-caddr_t
-_DEFUN (_sbrk, (incr),
-        int incr)
+void *
+_sbrk (incr)
+     int incr;
  {
-   extern char end; /* set by linker */
-   static char *heap_end;
-   char *prev_heap_end;
+   extern char   end; /* Set by linker.  */
+   static char * heap_end;
+   char *        prev_heap_end;
+
+   if (heap_end == 0)
+     heap_end = & end;

-   if (heap_end == 0) {
-      heap_end = &end;
-   }
     prev_heap_end = heap_end;
     heap_end += incr;
-   return (caddr_t) prev_heap_end;
+
+   return (void *) prev_heap_end;
  }