A sprinkling of 'static's and multiple-include guards

["Zack Weinberg" <zack at codesourcery dot com>]

These came up as I was testing a patch that makes duplicate_decls
somewhat pickier - too picky, in fact - about redeclarations of
things.  None of them are strictly necessary, but they are in the
preferred style.

unwind.h gets an implementation-namespace MI guard because it appears
to be intended to be usable outside GCC.

Bootstrapped i686-linux.

zw

        * dwarf2.h, unwind-dw2-fde.h, unwind-pe.h, unwind.h: 
        Add multiple-include guard.
cp:
        * parser.c (cp_parser_save_member_function_body): Mark the
        definition static.
treelang:
        * parse.y (yyerror): Mark the definition static.

===================================================================
Index: dwarf2.h
--- dwarf2.h	18 Jan 2003 02:26:43 -0000	1.25
+++ dwarf2.h	8 Jan 2004 07:47:10 -0000
@@ -38,6 +38,9 @@ Software Foundation, 59 Temple Place - S
 /* This file is shared between GCC and GDB, and should not contain
    prototypes.  */
 
+#ifndef GCC_DWARF2_H
+#define GCC_DWARF2_H
+
 /* Tag names and codes.  */
 enum dwarf_tag
   {
@@ -628,3 +631,5 @@ enum dwarf_macinfo_record_type
 #define DW_EH_PE_aligned	0x50
 
 #define DW_EH_PE_indirect	0x80
+
+#endif /* dwarf2.h */
===================================================================
Index: unwind-dw2-fde.h
--- unwind-dw2-fde.h	31 Oct 2003 20:46:26 -0000	1.12
+++ unwind-dw2-fde.h	8 Jan 2004 07:47:10 -0000
@@ -29,6 +29,8 @@ along with GCC; see the file COPYING.  I
 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 02111-1307, USA.  */
 
+#ifndef GCC_UNWIND_DW2_FDE_H
+#define GCC_UNWIND_DW2_FDE_H
 
 struct fde_vector
 {
@@ -174,3 +176,5 @@ last_fde (struct object *obj __attribute
   return f->length == 0;
 #endif
 }
+
+#endif /* unwind-dw2-fde.h */
===================================================================
Index: unwind-pe.h
--- unwind-pe.h	8 Dec 2003 19:47:12 -0000	1.16
+++ unwind-pe.h	8 Jan 2004 07:47:10 -0000
@@ -31,6 +31,9 @@
    compatibility problems with the base ABI.  This is slightly better
    than duplicating code, however.  */
 
+#ifndef GCC_UNWIND_PE_H
+#define GCC_UNWIND_PE_H
+
 /* If using C++, references to abort have to be qualified with std::.  */
 #if __cplusplus
 #define __gxx_abort std::abort
@@ -284,3 +287,5 @@ read_encoded_value (struct _Unwind_Conte
 }
 
 #endif
+
+#endif /* unwind-pe.h */
===================================================================
Index: unwind.h
--- unwind.h	4 Sep 2003 10:47:45 -0000	1.13
+++ unwind.h	8 Jan 2004 07:47:10 -0000
@@ -28,6 +28,9 @@
 /* This is derived from the C++ ABI for IA-64.  Where we diverge
    for cross-architecture compatibility are noted with "@@@".  */
 
+#ifndef _UNWIND_H
+#define _UNWIND_H
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -225,3 +228,5 @@ extern void * _Unwind_FindEnclosingFunct
 #ifdef __cplusplus
 }
 #endif
+
+#endif /* unwind.h */
===================================================================
Index: cp/parser.c
--- cp/parser.c	5 Jan 2004 21:07:20 -0000	1.147
+++ cp/parser.c	8 Jan 2004 07:47:10 -0000
@@ -14196,7 +14196,7 @@ cp_parser_functional_cast (cp_parser* pa
    specifiers applied to the declaration.  Returns the FUNCTION_DECL
    for the member function.  */
 
-tree
+static tree
 cp_parser_save_member_function_body (cp_parser* parser,
 				     tree decl_specifiers,
 				     tree declarator,
===================================================================
Index: treelang/parse.y
--- treelang/parse.y	28 Jul 2003 04:39:29 -0000	1.10
+++ treelang/parse.y	8 Jan 2004 07:47:10 -0000
@@ -783,7 +783,7 @@ print_token (FILE * file, unsigned int t
 }
 
 /* Output a message ERROR_MESSAGE from the parser.  */
-void
+static void
 yyerror (const char *error_message)
 {
   struct prod_token_parm_item *tok;