Fix warnings.

crypto/ec/ec_mult.c

@@ -206,7 +206,7 @@ int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
 
 		bits = i < num ? BN_num_bits(scalars[i]) : BN_num_bits(scalar);
 		wsize[i] = EC_window_bits_for_scalar_size(bits);
-		num_val += 1 << (wsize[i] - 1);
+		num_val += 1u << (wsize[i] - 1);
 		if (bits > max_bits)
 			max_bits = bits;
 		wbits[i] = 0;
@@ -227,7 +227,7 @@ int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
 	for (i = 0; i < totalnum; i++)
 		{
 		val_sub[i] = v;
-		for (j = 0; j < (1 << (wsize[i] - 1)); j++)
+		for (j = 0; j < (1u << (wsize[i] - 1)); j++)
 			{
 			*v = EC_POINT_new(group);
 			if (*v == NULL) goto err;
@@ -278,7 +278,7 @@ int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar,
 		if (wsize[i] > 1)
 			{
 			if (!EC_POINT_dbl(group, tmp, val_sub[i][0], ctx)) goto err;
-			for (j = 1; j < (1 << (wsize[i] - 1)); j++)
+			for (j = 1; j < (1u << (wsize[i] - 1)); j++)
 				{
 				if (!EC_POINT_add(group, val_sub[i][j], val_sub[i][j - 1], tmp, ctx)) goto err;
 				}

crypto/ec/ectest.c

@@ -55,6 +55,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <time.h>