Issue #25923: Added the const qualifier to static constant arrays.
diff --git a/Python/mystrtoul.c b/Python/mystrtoul.c
index 98429d4..a85790e 100644
--- a/Python/mystrtoul.c
+++ b/Python/mystrtoul.c
@@ -17,7 +17,7 @@
  * smallmax[base] is the largest unsigned long i such that
  * i * base doesn't overflow unsigned long.
  */
-static unsigned long smallmax[] = {
+static const unsigned long smallmax[] = {
     0, /* bases 0 and 1 are invalid */
     0,
     ULONG_MAX / 2,
@@ -62,14 +62,14 @@
  * Note that this is pessimistic if sizeof(long) > 4.
  */
 #if SIZEOF_LONG == 4
-static int digitlimit[] = {
+static const int digitlimit[] = {
     0,  0, 32, 20, 16, 13, 12, 11, 10, 10,  /*  0 -  9 */
     9,  9,  8,  8,  8,  8,  8,  7,  7,  7,  /* 10 - 19 */
     7,  7,  7,  7,  6,  6,  6,  6,  6,  6,  /* 20 - 29 */
     6,  6,  6,  6,  6,  6,  6};             /* 30 - 36 */
 #elif SIZEOF_LONG == 8
 /* [int(math.floor(math.log(2**64, i))) for i in range(2, 37)] */
-static int digitlimit[] = {
+static const int digitlimit[] = {
          0,   0, 64, 40, 32, 27, 24, 22, 21, 20,  /*  0 -  9 */
     19,  18, 17, 17, 16, 16, 16, 15, 15, 15,  /* 10 - 19 */
     14,  14, 14, 14, 13, 13, 13, 13, 13, 13,  /* 20 - 29 */