alloca.c: Respect USE_C_ALLOCA.

        * alloca.c: Respect USE_C_ALLOCA.
        * gencheck.c (xmalloc): Ignore __GNUC__ for definition.
        * gengenrtl.c (xmalloc): Likewise.

From-SVN: r21264

gcc/ChangeLog

+Fri Jul 17 14:58:44 1998  Richard Henderson  <rth@cygnus.com>
+
+	* alloca.c: Respect USE_C_ALLOCA.
+	* gencheck.c (xmalloc): Ignore __GNUC__ for definition.
+	* gengenrtl.c (xmalloc): Likewise.
+
 Fri Jul 17 14:18:14 1998  Richard Henderson  <rth@cygnus.com>
 
 	* loop.h (struct induction): Add no_const_addval.

gcc/alloca.c

@@ -36,8 +36,9 @@
 #include "blockinput.h"
 #endif
 
-/* If compiling with GCC 2, this file's not needed.  */
-#if !defined (__GNUC__) || __GNUC__ < 2
+/* If compiling with GCC 2, this file's not needed.  Except of course if
+   the C alloca is explicitly requested.  */
+#if defined (USE_C_ALLOCA) || !defined (__GNUC__) || __GNUC__ < 2
 
 /* If someone has defined alloca as a macro,
    there must be some other way alloca is supposed to work.  */

gcc/gencheck.c

@@ -61,7 +61,7 @@ int main (argc, argv)
   return 0;
 }
 
-#if defined(USE_C_ALLOCA) && !defined(__GNUC__)
+#if defined(USE_C_ALLOCA)
 /* FIXME: We only need an xmalloc definition because we are forced to
    link with alloca.o on some platforms.  This should go away if/when
    we link against libiberty.a. (ghazi@caip.rutgers.edu 6/3/98) */
@@ -73,10 +73,11 @@ xmalloc (nbytes)
 
   if (!tmp)
     {
-      fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n", nbytes);
+      fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n",
+	       nbytes);
       exit (FATAL_EXIT_CODE);
     }
 
   return tmp;
 }
-#endif /* USE_C_ALLOCA && !__GNUC__ */
+#endif /* USE_C_ALLOCA */

gcc/gengenrtl.c

@@ -22,10 +22,6 @@ Boston, MA 02111-1307, USA.  */
 #include "hconfig.h"
 #include "system.h"
 
-#include "obstack.h"
-#define	obstack_chunk_alloc	xmalloc
-#define	obstack_chunk_free	free
-
 #define NO_GENRTL_H
 #include "rtl.h"
 
@@ -284,7 +280,7 @@ gencode (f)
     gendef (f, *fmt);
 }
 
-#if defined(USE_C_ALLOCA) && !defined(__GNUC__)
+#if defined(USE_C_ALLOCA)
 char *
 xmalloc (nbytes)
      int nbytes;
@@ -293,13 +289,14 @@ xmalloc (nbytes)
 
   if (!tmp)
     {
-      fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n", nbytes);
+      fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n",
+	       nbytes);
       exit (FATAL_EXIT_CODE);
     }
 
   return tmp;
 }
-#endif /* USE_C_ALLOCA && !__GNUC__ */
+#endif /* USE_C_ALLOCA */
 
 int
 main(argc, argv)