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-rw-r--r--crypto/bn/bn_exp2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/bn/bn_exp2.c b/crypto/bn/bn_exp2.c
index 0b3e13f6bc..29029f4c72 100644
--- a/crypto/bn/bn_exp2.c
+++ b/crypto/bn/bn_exp2.c
@@ -240,7 +240,7 @@ int BN_mod_exp2_mont(BIGNUM *rr, BIGNUM *a1, BIGNUM *p1, BIGNUM *a2,
{
/* consider bits b-window1+1 .. b for this window */
i = b-window1+1;
- while (!BN_is_bit_set(p1, i))
+ while (!BN_is_bit_set(p1, i)) /* works for i<0 */
i++;
wpos1 = i;
wvalue1 = 1;