diff options
Diffstat (limited to 'src/field_5x52_impl.h')
| -rw-r--r-- | src/field_5x52_impl.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/field_5x52_impl.h b/src/field_5x52_impl.h index 4c4466eceb..6b97157d0f 100644 --- a/src/field_5x52_impl.h +++ b/src/field_5x52_impl.h @@ -487,8 +487,9 @@ static void secp256k1_fe_sqr(secp256k1_fe *r, const secp256k1_fe *a) { static SECP256K1_INLINE void secp256k1_fe_cmov(secp256k1_fe *r, const secp256k1_fe *a, int flag) { uint64_t mask0, mask1; + volatile int vflag = flag; SECP256K1_CHECKMEM_CHECK_VERIFY(r->n, sizeof(r->n)); - mask0 = flag + ~((uint64_t)0); + mask0 = vflag + ~((uint64_t)0); mask1 = ~mask0; r->n[0] = (r->n[0] & mask0) | (a->n[0] & mask1); r->n[1] = (r->n[1] & mask0) | (a->n[1] & mask1); @@ -570,8 +571,9 @@ static SECP256K1_INLINE void secp256k1_fe_half(secp256k1_fe *r) { static SECP256K1_INLINE void secp256k1_fe_storage_cmov(secp256k1_fe_storage *r, const secp256k1_fe_storage *a, int flag) { uint64_t mask0, mask1; + volatile int vflag = flag; SECP256K1_CHECKMEM_CHECK_VERIFY(r->n, sizeof(r->n)); - mask0 = flag + ~((uint64_t)0); + mask0 = vflag + ~((uint64_t)0); mask1 = ~mask0; r->n[0] = (r->n[0] & mask0) | (a->n[0] & mask1); r->n[1] = (r->n[1] & mask0) | (a->n[1] & mask1); |