c-lex.c: Include <stdlib.h> and <string.h>/<strings.h>.

a
	* c-lex.c: Include <stdlib.h> and <string.h>/<strings.h>.  Add
	prototype for `handle_sysv_pragma', and make it static.  Add
	parentheses around assignment used as truth value.
	* combine.c (combine_instructions): Protect variable `prev' with
	macro HAVE_cc0.
	(can_combine_p): Protect variable `link' with AUTO_INC_DEC.
	(extract_left_shift): Add parentheses around operand of &.
	(merge_outer_ops): Avoid an empty body in an else-statement.
	(gen_rtx_combine): Remove unused variable `i'.
	* sparc/gmon-sol2.c: Include <fcntl.h>.  Make return type of
        function monstartup `void'.  Likewise for internal_mcount.  Add
        `static void' prototype for moncontrol.  Reconcile sprintf format
        vs. args.
	* sparc/sparc.c: Include <stdlib.h> and <string.h>/<strings.h>.
	Make return type of function_arg_slotno explicitly `int'.
	(reg_unused_after): Add	parentheses around assignment used as
	truth value.
	(save_regs): Add explicit braces to avoid ambiguous `else'.
	(function_arg_slotno): Add parentheses around && within ||.
	(function_arg_pass_by_reference): Likewise.
	(sparc_flat_output_function_prologue): Reconcile fprintf format
	vs. args.
	* svr4.h (ASM_OUTPUT_LIMITED_STRING): Add parentheses around
	assignment used as truth value.
	* cplus-dem.c: Include <stdlib.h>.
	(demangle_signature): Avoid an empty body in an else-statement.
	(do_type): Remove unused variable `lvl'.
	* cppexp.c: Don't have <stdlib.h> depend on MULTIBYTE_CHARS.
	Include <string.h>/<strings.h>.
	(cpp_lex): Remove unused variable `namelen'.
	(cpp_lex): Explicitly declare `num_chars' as an int.
	* cpplib.c: Avoid duplicate inclusion of <stdlib.h>, include
	<unistd.h> instead.  Explicitly declare is_system_include
	returning int.
	(make_assertion): Remove unused variable `kt'.
	(cpp_expand_to_buffer): Hide variable `obuf'.
	(output_line_command): Remove unused variables, `line_end',
	`line_cmd_buf' and `len'.
	(macarg): Remove unused variable `arg_start'.
	(special_symbol): Remove unused variable `i'.  Add parentheses
	around assignment used as truth value.
	(do_include):  Remove unused variables `pcfname' and `retried',
	hide `pcf' and `pcfbuflimit'.
	(do_line): Remove unused variable `i'.
	(finclude): Hide variable `missing_newline'.
	(cpp_handle_options): Remove unused variable `j'.
	(read_token_list): Remove unused variable `eofp'.
	(cpp_error_with_line): Remove unused variable `i'.
	(cpp_warning_with_line): Likewise.
	(cpp_pedwarn_with_line): Explicitly declare `column' as int.
	(cpp_error_from_errno): Remove unused variable `i'.
	* cse.c (invalidate): Add parentheses around assignment used as
	truth value.
	(find_best_addr): Move declaration of variable `our_cost' inside
	the conditional macro where its used.
	(fold_rtx): Avoid an empty body in an if-statement.
	(cse_insn): Wrap variables  `this_insn_cc0_mode' and
	`this_insn_cc0' in macro HAVE_cc0.
	* dwarf2out.c: Include <stdlib.h> and <string.h>/<string.h>.
	(ASM_OUTPUT_DWARF_DATA8):  Reconcile format vs. args in fprintf's.
	(output_uleb128): Likewise.
	(output_sleb128): Likewise.
	(output_cfi): Likewise.
	(output_call_frame_info): Remove unused variables `j', `fde_size'
	and `fde_pad'.
	(comp_unit_has_inlines): Hide declaration as per rest of file.
	(size_of_line_prolog): Correct typo in prototype.
	(add_arange): Likewise.
	(output_aranges): Likewise.
	(add_name_and_src_coords_attributes): Likewise.
	(gen_array_type_die): Likewise.
	(gen_inlined_subroutine_die): Likewise.
	(equate_decl_number_to_die): Remove unused variable `i'.
	(print_die): Reconcile format vs. args in fprintf's.
	(print_dwarf_line_table): Likewise.
	(output_die): Likewise.
	(output_line_info): Likewise.
	(add_subscript_info): Avoid an empty body in an else-statement.
	(gen_subprogram_die): Remove unused variable `fp_loc'.
	* dwarfout.c: Explicitly declare `next_pubname_number' as int.
	Protect `ordering_attribute' prototype with USE_ORDERING_ATTRIBUTE
	macro.  Protect `src_coords_attribute' prototype with
	DWARF_DECL_COORDINATES macro.  Hide `output_entry_point_die'
	prototype as in the rest of the file.  Likewise for
	`output_pointer_type_die' and `output_reference_type_die'.  Remove
	prototype for `type_of_for_scope'.
	(output_unsigned_leb128): Reconcile format vs. args in fprintf.
	(type_attribute): Add explicit braces to avoid ambiguous `else'.
	* final.c: Include <stdlib.h> and <string.h>/<strings.h>.
	(shorten_branches): Protect declaration of tmp_length with
	SHORTEN_WITH_ADJUST_INSN_LENGTH and ADJUST_INSN_LENGTH macros.
	(profile_function): Protect declaration of `sval' and `cxt'
	variables with appropriate macros.
	(final_scan_insn): Likewise for `note' variable.  Add explicit
	braces to avoid empty body in an if-statement.
	(output_asm_insn): Move variable `i' inside macro conditional
	where it is used.  Add parentheses around assignment used as truth
	value.
	(asm_fprintf) Likewise, likewise.
	* fix-header.c (main): Remove unused variable `done'.  Protect
	declaration of `i' with FIXPROTO_IGNORE_LIST.
	* pexecute.c: Include <unistd.h>.  Prototype `my_strerror'.
	* print-rtl.c (print_inline_rtx): Explicitly declare the parameter
	`ind'.
	* profile.c: Include <string.h>/<strings.h>.
	(instrument_arcs): Remove unused variables `note', `inverted',
	`zero' and `neg_one'.
	(branch_prob): Avoid empty body in an if-statement.
	* regclass.c: Include <stdlib.h>.
	(reg_alternate_class): Explicitly declare parameter `regno'.
	* regmove.c (regmove_optimize): Remove unused variable `p'.  Add
	parentheses around assignment used as truth value.
	(find_matches):  Remove unused variables `output_operand' and
	`matching_operand'.
	(fixup_match_1): Remove statement with no effect: "if (0) ;".
	* scan.c (sstring_append): Explicitly declare `count' as int.
	(scan_string): Explicitly declare parameter `init' as int.
	* sched.c: Include <stdlib.h>.
	(BLOCKAGE_RANGE): Add parentheses around arithmetic in operand of |.
	(rank_for_schedule): Add parentheses around assignment used as
	truth value.
	(schedule_block): Likewise.
	(regno_use_in): Likewise.
	(schedule_insns): Remove unused variable `i'.
	* toplev.c: Include <stdlib.h> and <string.h>/<strings.h>.
	(v_message_with_decl): Remove unused variable `n'.
	(botch): Explicitly declare parameter `s' as char *.
	(main): Add parentheses around assignment used as truth value.
	* tree.c (make_node): Protect the variable `kind' with the
	GATHER_STATISTICS macro.
	(real_value_from_int_cst): Move variable `e' inside conditional
	macro area where it is used.
	(tree_last): Add parentheses around assignment used as truth value.
	(build1): Protect the variable `kind' with the GATHER_STATISTICS
	macro.
	(print_obstack_statistics): Reconcile format vs. args in fprintf.
	Protect variables `i', `total_nodes', and `total_bytes' with the
	GATHER_STATISTICS macro.
Lots more -W -Wall warnings disappear.

From-SVN: r17515

gcc/cplus-dem.c

@@ -31,6 +31,9 @@ Boston, MA 02111-1307, USA.  */
 #include <ctype.h>
 #include <string.h>
 #include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 
 #include <demangle.h>
 #undef CURRENT_DEMANGLING_STYLE
@@ -838,7 +841,7 @@ demangle_signature (work, mangled, declp)
 	    }
 	  else
 	    /* fall through */
-	    ;
+	    {;}
 
 	default:
 	  if (AUTO_DEMANGLING || GNU_DEMANGLING)
@@ -2322,7 +2325,6 @@ do_type (work, mangled, result)
       /* A template parm.  We substitute the corresponding argument. */
       {
 	int idx;
-	int lvl;
 
 	(*mangled)++;
 	idx = consume_count_with_underscores (mangled);

gcc/cse.c

@@ -1550,7 +1550,7 @@ invalidate (x, full_mode)
 
 	  struct table_elt *elt;
 
-	  while (elt = lookup_for_remove (x, hash, GET_MODE (x)))
+	  while ((elt = lookup_for_remove (x, hash, GET_MODE (x))))
 	    remove_from_table (elt, hash);
 	}
       else
@@ -2554,7 +2554,6 @@ find_best_addr (insn, loc)
 {
   struct table_elt *elt, *p;
   rtx addr = *loc;
-  int our_cost;
   int found_better = 1;
   int save_do_not_record = do_not_record;
   int save_hash_arg_in_memory = hash_arg_in_memory;
@@ -2624,7 +2623,7 @@ find_best_addr (insn, loc)
 #ifndef ADDRESS_COST
   if (elt)
     {
-      our_cost = elt->cost;
+      int our_cost = elt->cost;
 
       /* Find the lowest cost below ours that works.  */
       for (elt = elt->first_same_value; elt; elt = elt->next_same_value)
@@ -5266,10 +5265,13 @@ fold_rtx (x, insn)
 	  }
       }
 
-    else if (fmt[i] == 'E')
-      /* Don't try to fold inside of a vector of expressions.
-	 Doing nothing is harmless.  */
-      ;
+    else
+      {
+	if (fmt[i] == 'E')
+	  /* Don't try to fold inside of a vector of expressions.
+	     Doing nothing is harmless.  */
+	  {;}	
+      }
 
   /* If a commutative operation, place a constant integer as the second
      operand unless the first operand is also a constant integer.  Otherwise,
@@ -6111,9 +6113,11 @@ cse_insn (insn, in_libcall_block)
   rtx tem;
   register int n_sets = 0;
 
+#ifdef HAVE_cc0
   /* Records what this insn does to set CC0.  */
   rtx this_insn_cc0 = 0;
   enum machine_mode this_insn_cc0_mode = VOIDmode;
+#endif
 
   rtx src_eqv = 0;
   struct table_elt *src_eqv_elt = 0;