cfgrtl.c (purge_all_dead_edges): Initialize variable.

	* cfgrtl.c (purge_all_dead_edges): Initialize variable.
	* dwarf2out.c (is_cxx): Prototype.
	* local-alloc.c (block_alloc): Avoid 'unsigned>=0 is always true'
	warning.
	* objc/objc-act.c (defer_fn): Avoid signed/unsigned warning.

From-SVN: r47528

gcc/ChangeLog

+2001-12-02  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* cfgrtl.c (purge_all_dead_edges): Initialize variable.
+	* dwarf2out.c (is_cxx): Prototype.
+	* local-alloc.c (block_alloc): Avoid 'unsigned>=0 is always true'
+	warning.
+	* objc/objc-act.c (defer_fn): Avoid signed/unsigned warning.
+
 Sun Dec  2 07:12:30 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
 	* libgcc2.c (__bb_exit_func): Fix line wrap problems.

gcc/cfgrtl.c

@@ -1944,7 +1944,7 @@ purge_all_dead_edges (update_life_p)
      int update_life_p;
 {
   int i, purged = false;
-  sbitmap blocks;
+  sbitmap blocks = 0;
 
   if (update_life_p)
     {

gcc/dwarf2out.c

@@ -3459,6 +3459,7 @@ static unsigned get_AT_unsigned		PARAMS ((dw_die_ref,
 static inline dw_die_ref get_AT_ref 	PARAMS ((dw_die_ref,
 						 enum dwarf_attribute));
 static int is_c_family			PARAMS ((void));
+static int is_cxx			PARAMS ((void));
 static int is_java			PARAMS ((void));
 static int is_fortran			PARAMS ((void));
 static void remove_AT			PARAMS ((dw_die_ref,

gcc/local-alloc.c

@@ -1347,8 +1347,8 @@ block_alloc (b)
 		  if (hard_reg != NULL_RTX)
 		    {
 		      if (GET_CODE (hard_reg) == REG
-			  && REGNO (hard_reg) >= 0
-			  && REGNO (hard_reg) < FIRST_PSEUDO_REGISTER
+			  && IN_RANGE (REGNO (hard_reg),
+				       0, FIRST_PSEUDO_REGISTER - 1)
 			  && ! call_used_regs[REGNO (hard_reg)])
 			continue;
 		    }

gcc/objc/objc-act.c

@@ -631,7 +631,7 @@ defer_fn (fn)
 void
 finish_file ()
 {
-  int i;
+  size_t i;
 
   for (i = 0; i < VARRAY_ACTIVE_SIZE (deferred_fns); i++)
     /* Don't output the same function twice.  We may run into such