Eliminate MALLOC_INCOMPATIBLE.

gdb/config/sparc/nm-sun4os4.h

@@ -36,3 +36,7 @@
 
 #define KERNEL_U_SIZE kernel_u_size()
 extern int kernel_u_size (void);
+
+/* SunOS 4.x uses nonstandard "char *" as type of third argument to ptrace() */
+
+#define PTRACE_ARG3_TYPE char*

gdb/config/sparc/sun4os4.mh

@@ -1,5 +1,4 @@
 # Host: Sun 4 or Sparcstation, running SunOS 4
-XM_FILE= xm-sun4os4.h
 NAT_FILE= nm-sun4os4.h
 NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o
 HOST_IPC=-DBSD_IPC

gdb/config/sparc/xm-sun4os4.h

@@ -1,33 +0,0 @@
-/* Macro definitions for running gdb on a Sun 4 running sunos 4.
-   Copyright 1989, 1993, 1994, 1995, 1996
-   Free Software Foundation, Inc.
-
-   This file is part of GDB.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#define FPU
-
-/* /usr/include/malloc.h is included by vx-share/xdr_ld, and might
-   declare these using char * not void *.  The following should work with
-   acc, gcc, or /bin/cc.  */
-
-#define MALLOC_INCOMPATIBLE
-#include <malloc.h>
-
-/* SunOS 4.x uses nonstandard "char *" as type of third argument to ptrace() */
-
-#define PTRACE_ARG3_TYPE char*