cal: set statically defined data read-only

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

diff --git a/misc-utils/cal.c b/misc-utils/cal.c
index c4ed1d1fe9417ad8e78126a22336b63a88082eed..d31b51d0bf1213121ddc07dfb3782c880ad8200b 100644 (file)
--- a/misc-utils/cal.c
+++ b/misc-utils/cal.c
@@ -197,14 +197,14 @@ struct fmt_st
        char s[FMT_ST_LINES][FMT_ST_CHARS];
 };
 
-static int days_in_month[2][13] = {
+static const int days_in_month[2][13] = {
        {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
        {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
 };
 
 /* September 1752 is special, and has static assignments for both date
  * and Julian representations.  */
-static int d_sep1752[MAXDAYS / 2] = {
+static const int d_sep1752[MAXDAYS / 2] = {
        SPACE,  SPACE,  1,      2,      14,     15,     16,
        17,     18,     19,     20,     21,     22,     23,
        24,     25,     26,     27,     28,     29,     30
@@ -658,7 +658,7 @@ static void yearly(int day, long year, int julian)
 static void day_array(int day, int month, long year, int *days)
 {
        int julday, daynum, dw, dm;
-       int *sep1752;
+       const int *sep1752;
 
        memcpy(days, empty, MAXDAYS * sizeof(int));
        if (year == REFORMATION_YEAR && month == REFORMATION_MONTH) {