by request: let BN_dup(NULL) just return NULL

8d85b33e · Bodo Möller · 0dd25e36 · 8d85b33e
隐藏空白更改
内联并排

Showing with 2 addition and 0 deletion

crypto/bn/bn_lib.c crypto/bn/bn_lib.c +2 -0

未找到文件。
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -489,6 +489,8 @@ BIGNUM *BN_dup(const BIGNUM *a)
 	{
 	BIGNUM *r;

+	if (a == NULL) return NULL;
+
 	bn_check_top(a);

 	r=BN_new();