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-rw-r--r--crypto/bn/bn_add.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/bn/bn_add.c b/crypto/bn/bn_add.c
index c5ab066c9e..5d24691233 100644
--- a/crypto/bn/bn_add.c
+++ b/crypto/bn/bn_add.c
@@ -61,9 +61,9 @@
#include "bn_lcl.h"
/* r can == a or b */
-int BN_add(BIGNUM *r, BIGNUM *a, BIGNUM *b)
+int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)
{
- BIGNUM *tmp;
+ const BIGNUM *tmp;
bn_check_top(a);
bn_check_top(b);