C++ PATCH to parse errors and feed_input

[Jason Merrill <jason_merrill at redhat dot com>]

This patch fixes a bug whereby we fed an endless stream of
END_OF_SAVED_INPUT to the parser because had ignored the
PRE_PARSED_FUNCTION_DECL token due to an earlier error.

2001-10-02  Jason Merrill  <jason_merrill@redhat.com>

	* spew.c (end_input): No longer static.
	* cp-tree.h: Declare it.
	* parse.y (datadef): Add "error END_OF_SAVED_INPUT" expansion.

*** parse.y.~1~	Sun Sep 23 16:36:15 2001
--- parse.y	Tue Oct  2 15:11:43 2001
*************** datadef:
*** 736,741 ****
--- 736,743 ----
  		}
  	| error ';'
  	| error '}'
+ 	| error END_OF_SAVED_INPUT
+ 		{ end_input (); }
  	| ';'
  	| bad_decl
  	;
*** cp-tree.h.~1~	Mon Oct  1 13:52:24 2001
--- cp-tree.h	Tue Oct  2 15:34:32 2001
*************** extern void do_pending_defargs			PARAMS 
*** 4142,4147 ****
--- 4142,4148 ----
  extern void done_pending_defargs		PARAMS ((void));
  extern void unprocessed_defarg_fn               PARAMS ((tree));
  extern void replace_defarg			PARAMS ((tree, tree));
+ extern void end_input				PARAMS ((void));
  
  /* in tree.c */
  extern void init_tree			        PARAMS ((void));
*** spew.c.~1~	Sun Sep 23 16:38:55 2001
--- spew.c	Tue Oct  2 15:34:40 2001
*************** static SPEW_INLINE void consume_token PA
*** 113,119 ****
  static SPEW_INLINE int read_process_identifier PARAMS ((YYSTYPE *));
  
  static SPEW_INLINE void feed_input PARAMS ((struct unparsed_text *));
- static SPEW_INLINE void end_input PARAMS ((void));
  static SPEW_INLINE void snarf_block PARAMS ((const char *, int));
  static tree snarf_defarg PARAMS ((void));
  static int frob_id PARAMS ((int, int, tree *));
--- 113,118 ----
*************** read_token (t)
*** 358,364 ****
    return t->yychar;
  }
  
! static SPEW_INLINE void
  feed_input (input)
       struct unparsed_text *input;
  {
--- 357,363 ----
    return t->yychar;
  }
  
! static void
  feed_input (input)
       struct unparsed_text *input;
  {
*************** feed_input (input)
*** 397,403 ****
    feed = f;
  }
  
! static SPEW_INLINE void
  end_input ()
  {
    struct feed *f = feed;
--- 396,402 ----
    feed = f;
  }
  
! void
  end_input ()
  {
    struct feed *f = feed;
// Test that the parser doesn't go into an infinite loop from ignoring the
// PRE_PARSED_FUNCTION_DECL token.

class C { static void* operator new(size_t); }; // { dg-error "" "" }
void* C::operator new(size_t) { return 0; } // { dg-error "" "" }
class D { D(int i): integer(i){}}; // { dg-error "" "" }