From 388a91a51e3954a0a374e96205763c76d66fae62 Mon Sep 17 00:00:00 2001
From: Zhi Guan <guanzhi1980@gmail.com>
Date: Thu, 28 May 2026 09:00:50 +0800
Subject: [PATCH] Remove warnings on Windows

---
 src/lms.c           | 4 ++--
 src/sdf/sdf.c       | 2 --
 src/secp256r1_key.c | 3 ---
 src/xmss.c          | 2 +-
 4 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/src/lms.c b/src/lms.c
index bfd454d0..5a4280ac 100644
--- a/src/lms.c
+++ b/src/lms.c
@@ -885,11 +885,11 @@ int lms_signature_to_merkle_root(const uint8_t I[16], size_t h, int q,
 	size_t i;
 
 	n = (size_t)1 << h;
-	if (q >= n) {
+	if (q < 0 || (size_t)q >= n) {
 		error_print();
 		return -1;
 	}
-	r = n + q;
+	r = n + (size_t)q;
 	PUTU32(rbytes, r);
 
 	lmots_signature_to_public_hash(I, q, y, dgst, root);
diff --git a/src/sdf/sdf.c b/src/sdf/sdf.c
index 6d9188fc..d3fd0e2a 100755
--- a/src/sdf/sdf.c
+++ b/src/sdf/sdf.c
@@ -389,7 +389,6 @@ int sdf_generate_key(SDF_DEVICE *dev, SDF_KEY *key,
 	ECCrefPublicKey eccPublicKey;
 	ECCCipher eccCipher;
 	SM2_CIPHERTEXT ciphertext;
-	int ret;
 
 	if (!dev || !key || !sm2_key || !wrappedkey_len) {
 		error_print();
@@ -748,7 +747,6 @@ int sdf_export_encrypt_public_key(SDF_DEVICE *dev, int key_index, SM2_KEY *sm2_k
 int sdf_load_private_key(SDF_DEVICE *dev, SDF_PRIVATE_KEY *key, int key_index, const char *pass)
 {
 	void *hSession = NULL;
-	ECCrefPublicKey eccPublicKey;
 
 	if (!dev || !key || !pass) {
 		error_print();
diff --git a/src/secp256r1_key.c b/src/secp256r1_key.c
index 97f82823..2694b4ef 100644
--- a/src/secp256r1_key.c
+++ b/src/secp256r1_key.c
@@ -95,9 +95,6 @@ int secp256r1_public_key_to_bytes(const SECP256R1_KEY *key, uint8_t **out, size_
 
 int secp256r1_public_key_from_bytes(SECP256R1_KEY *key, const uint8_t **in, size_t *inlen)
 {
-	secp256r1_t x;
-	secp256r1_t y;
-
 	if (!key || !in || !(*in) || !inlen) {
 		error_print();
 		return -1;
diff --git a/src/xmss.c b/src/xmss.c
index d438fb0e..f3b6d134 100644
--- a/src/xmss.c
+++ b/src/xmss.c
@@ -1878,7 +1878,7 @@ int xmssmt_build_auth_path(const xmss_hash256_t *tree, size_t height, size_t lay
 
 	for (i = 0; i < layers; i++) {
 		uint64_t local_index = index & (((uint64_t)1 << (height/layers)) - 1);
-		xmss_build_auth_path(tree, height/layers, local_index, auth_path);
+		xmss_build_auth_path(tree, height/layers, (uint32_t)local_index, auth_path);
 		auth_path += height/layers;
 		index >>= height/layers;
 		tree += xmss_num_tree_nodes(height/layers);