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-rw-r--r--ext/standard/php_crypt_r.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/standard/php_crypt_r.c b/ext/standard/php_crypt_r.c
index 1e55f5f9b5..f8dffe9cc5 100644
--- a/ext/standard/php_crypt_r.c
+++ b/ext/standard/php_crypt_r.c
@@ -83,7 +83,7 @@ void _crypt_extended_init_r(void)
#define MD5_MAGIC "$1$"
#define MD5_MAGIC_LEN 3
-static unsigned char itoa64[] = /* 0 ... 63 => ascii - 64 */
+static const unsigned char itoa64[] = /* 0 ... 63 => ascii - 64 */
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
/* Convert a 16/32 bit integer to Base64 string representation */