c-lex.c (c_lex_with_flags, lex_string): Constify.

	* c-lex.c (c_lex_with_flags, lex_string): Constify.
	* c-ppoutput.c (print_line, pp_dir_change): Likewise.
	* c-typeck.c (free_all_tagged_tu_seen_up_to): Likewise.
	* cfg.c (bb_copy_original_hash, bb_copy_original_eq): Likewise.
	* cfgloop.c (loop_exit_hash, loop_exit_eq): Likewise.
	* ddg.c (compare_sccs): Likewise.
	* df-scan.c (df_ref_compare, df_mw_compare): Likewise.
	* dfp.c (decimal_real_from_string, decimal_to_decnumber,
	decimal_to_binary, decimal_do_compare, decimal_real_to_decimal,
	decimal_do_fix_trunc, decimal_real_to_integer,
	decimal_real_to_integer2, decimal_real_maxval): Likewise.
	* dse.c (const_group_info_t): New.
	(invariant_group_base_eq, invariant_group_base_hash): Constify.
	* dwarf2out.c (const_dw_die_ref): New.
	(decl_die_table_hash, decl_die_table_eq, file_info_cmp): Constify.
	* tree-browser.c (TB_parent_eq): Likewise.
	* unwind-dw2-fde.c (__register_frame_info_bases,
	__deregister_frame_info_bases, fde_unencoded_compare, fde_split,
	add_fdes, linear_search_fdes, binary_search_unencoded_fdes):
	Likewise.
	* unwind-dw2-fde.h (get_cie, next_fde): Likewise.
	* unwind-dw2.c (uw_frame_state_for): Likewise.
	* value-prof.c (histogram_hash, histogram_eq): Likewise.
	* value-prof.h (const_histogram_value): New.

From-SVN: r126920

1 files changed, 11 insertions, 10 deletions

diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 974419f..5b67962 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -2700,6 +2700,7 @@ struct dwarf_file_data GTY(())
 
 typedef struct dw_val_struct *dw_val_ref;
 typedef struct die_struct *dw_die_ref;
+typedef const struct die_struct *const_dw_die_ref;
 typedef struct dw_loc_descr_struct *dw_loc_descr_ref;
 typedef struct dw_loc_list_struct *dw_loc_list_ref;
 
@@ -5685,7 +5686,7 @@ equate_type_number_to_die (tree type, dw_die_ref type_die)
 static hashval_t
 decl_die_table_hash (const void *x)
 {
-  return (hashval_t) ((const dw_die_ref) x)->decl_id;
+  return (hashval_t) ((const_dw_die_ref) x)->decl_id;
 }
 
 /* Return nonzero if decl_id of die_struct X is the same as UID of decl *Y.  */
@@ -5693,7 +5694,7 @@ decl_die_table_hash (const void *x)
 static int
 decl_die_table_eq (const void *x, const void *y)
 {
-  return (((const dw_die_ref) x)->decl_id == DECL_UID ((const tree) y));
+  return (((const_dw_die_ref) x)->decl_id == DECL_UID ((const tree) y));
 }
 
 /* Return the DIE associated with a given declaration.  */
@@ -7778,8 +7779,8 @@ file_info_cmp (const void *p1, const void *p2)
 {
   const struct file_info *s1 = p1;
   const struct file_info *s2 = p2;
-  unsigned char *cp1;
-  unsigned char *cp2;
+  const unsigned char *cp1;
+  const unsigned char *cp2;
 
   /* Take care of file names without directories.  We need to make sure that
      we return consistent values to qsort since some will get confused if
@@ -7789,18 +7790,18 @@ file_info_cmp (const void *p1, const void *p2)
   if ((s1->path == s1->fname || s2->path == s2->fname))
     return (s2->path == s2->fname) - (s1->path == s1->fname);
 
-  cp1 = (unsigned char *) s1->path;
-  cp2 = (unsigned char *) s2->path;
+  cp1 = (const unsigned char *) s1->path;
+  cp2 = (const unsigned char *) s2->path;
 
   while (1)
     {
       ++cp1;
       ++cp2;
       /* Reached the end of the first path?  If so, handle like above.  */
-      if ((cp1 == (unsigned char *) s1->fname)
-	  || (cp2 == (unsigned char *) s2->fname))
-	return ((cp2 == (unsigned char *) s2->fname)
-		- (cp1 == (unsigned char *) s1->fname));
+      if ((cp1 == (const unsigned char *) s1->fname)
+	  || (cp2 == (const unsigned char *) s2->fname))
+	return ((cp2 == (const unsigned char *) s2->fname)
+		- (cp1 == (const unsigned char *) s1->fname));
 
       /* Character of current path component the same?  */
       else if (*cp1 != *cp2)