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-rw-r--r--src/tr.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/tr.c b/src/tr.c
index 551397674..8775613fe 100644
--- a/src/tr.c
+++ b/src/tr.c
@@ -561,7 +561,7 @@ unquote (s, len)
static enum Char_class
look_up_char_class (class_str, len)
- unsigned char *class_str;
+ const unsigned char *class_str;
int len;
{
unsigned int i;
@@ -723,7 +723,7 @@ append_range (list, first, last)
static int
append_char_class (list, char_class_str, len)
struct Spec_list *list;
- unsigned char *char_class_str;
+ const unsigned char *char_class_str;
int len;
{
enum Char_class char_class;
@@ -780,7 +780,7 @@ append_repeated_char (list, the_char, repeat_count)
static int
append_equiv_class (list, equiv_class_str, len)
struct Spec_list *list;
- unsigned char *equiv_class_str;
+ const unsigned char *equiv_class_str;
int len;
{
struct List_element *new;