diff --git a/libs/argparse/src/argparse.c b/libs/argparse/src/argparse.c
index dc3f22e..c85d309 100644
--- a/libs/argparse/src/argparse.c
+++ b/libs/argparse/src/argparse.c
@@ -221,7 +221,7 @@ static int handle_positional_arg(scc_argparse_context_t *ctx,
         return SCC_ARGPARSE_ERR_NONE;
     }
 
-    if (ctx->positional_index < scc_vec_size(ctx->current_cmd->args)) {
+    if (ctx->positional_index < (int)scc_vec_size(ctx->current_cmd->args)) {
         scc_argparse_arg_t *arg =
             &scc_vec_at(ctx->current_cmd->args, ctx->positional_index);
         *arg->spec.store.str_store = ctx->result.value;
diff --git a/libs/pproc/src/pproc_expand.c b/libs/pproc/src/pproc_expand.c
index 913869a..2746e7e 100644
--- a/libs/pproc/src/pproc_expand.c
+++ b/libs/pproc/src/pproc_expand.c
@@ -146,7 +146,8 @@ split_arguments(scc_pproc_macro_extened_params_t *splited_params,
             depth--;
         }
         if (depth != 0 || raw_arg->type != SCC_TOK_COMMA ||
-            (is_variadic && scc_vec_size(*splited_params) == named_count - 1)) {
+            (is_variadic &&
+             (int)scc_vec_size(*splited_params) == named_count - 1)) {
             if (scc_vec_size(arg) == 0 && raw_arg->type == SCC_TOK_BLANK) {
                 scc_lexer_tok_drop(raw_arg);
             } else {
@@ -169,7 +170,7 @@ split_arguments(scc_pproc_macro_extened_params_t *splited_params,
     }
 
     scc_vec_push(*splited_params, arg);
-    if (is_variadic && scc_vec_size(*splited_params) == named_count - 1) {
+    if (is_variadic && (int)scc_vec_size(*splited_params) == named_count - 1) {
         scc_vec_init(arg);
         scc_vec_push(*splited_params, arg);
     }
@@ -318,10 +319,11 @@ static inline void expand_function_macro(scc_pproc_expand_t *expand_ctx,
             int left_idx = got_left_non_blank(i, &macro->replaces);
             int right_idx = got_right_non_blank(i, &macro->replaces);
 
-            if (left_idx < 0 || right_idx >= (int)macro->replaces.size) {
+            if (left_idx < 0 ||
+                right_idx >= (int)scc_vec_size(macro->replaces)) {
                 LOG_FATAL("Invalid ## operator");
             }
-            while (i++ < right_idx) {
+            while ((int)i++ < right_idx) {
                 scc_lexer_tok_drop(&scc_vec_pop(tok_buffer));
             }
 
@@ -448,7 +450,7 @@ static inline void expand_object_macro(scc_pproc_expand_t *expand_ctx,
             scc_lexer_tok_t *right = &scc_vec_at(macro->replaces, right_idx);
 
             scc_lexer_tok_t concate_tok = concatenate_tokens(left, right);
-            while (i++ < right_idx) {
+            while ((int)i++ < right_idx) {
                 scc_lexer_tok_drop(&scc_vec_pop(tok_buffer));
             }
             if (concate_tok.type == SCC_TOK_UNKNOWN) {
diff --git a/libs/pproc/src/pproc_include.c b/libs/pproc/src/pproc_include.c
index 6831245..3a9f6ae 100644
--- a/libs/pproc/src/pproc_include.c
+++ b/libs/pproc/src/pproc_include.c
@@ -36,7 +36,7 @@ static int switch_file_stack(scc_pproc_t *pp, scc_cstring_t *fname,
     SCC_ERROR(*pos, "include file '%s' not found", scc_cstring_as_cstr(fname));
     return -1;
 FOPEN:
-    if (scc_vec_size(pp->file_stack) >= pp->config.max_include_depth) {
+    if ((int)scc_vec_size(pp->file_stack) >= pp->config.max_include_depth) {
         SCC_FATAL(*pos, "include depth exceeds maximum (%d)",
                   pp->config.max_include_depth);
         LOG_FATAL("Include depth is too deep...");
diff --git a/libs/sstream/src/scc_pos_log.c b/libs/sstream/src/scc_pos_log.c
index 38941e1..044f395 100644
--- a/libs/sstream/src/scc_pos_log.c
+++ b/libs/sstream/src/scc_pos_log.c
@@ -5,7 +5,7 @@ static int user_log_handler(logger_t *module, log_level_t level,
                             const char *fmt, ...) {
 
     /* clang-format off */
-    (void)file; (void)line; (void)func; // 不再使用
+    (void) module, (void)file, (void)line, (void)func; // 不再使用
 
     const char *level_str = null;
     switch (level) {