4 files changed, 6 insertions, 6 deletions

diff --git a/source/ui-clone.c b/source/ui-clone.c
index e11f496..c554c24 100644
--- a/source/ui-clone.c
+++ b/source/ui-clone.c
@@ -115,7 +115,7 @@ void cgit_clone_objects(void)
 	for (p = ctx.qry.path; *p; ++p) {
 		if (*p == '.' && *(p + 1) == '.')
 			goto err;
-		if (!isalnum(*p) && *p != '/' && *p != '.' && *p != '-')
+		if (!isalnum((unsigned char)*p) && *p != '/' && *p != '.' && *p != '-')
 			goto err;
 	}
 
diff --git a/source/ui-log.c b/source/ui-log.c
index 9906bbc..d3610d3 100644
--- a/source/ui-log.c
+++ b/source/ui-log.c
@@ -350,13 +350,13 @@ static char *next_token(char **src)
 
 	if (!src || !*src)
 		return NULL;
-	while (isspace(**src))
+	while (isspace((unsigned char)**src))
 		(*src)++;
 	if (!**src)
 		return NULL;
 	result = *src;
 	while (**src) {
-		if (isspace(**src)) {
+		if (isspace((unsigned char)**src)) {
 			**src = '\0';
 			(*src)++;
 			break;
diff --git a/source/ui-shared.c b/source/ui-shared.c
index 88e5075..4084748 100644
--- a/source/ui-shared.c
+++ b/source/ui-shared.c
@@ -1237,7 +1237,7 @@ void cgit_compose_snapshot_prefix(struct strbuf *filename, const char *base,
 	 * i.e. each stripped tag can be inverted without ambiguities.
 	 */
 	if (repo_get_oid(the_repository, fmt("refs/tags/%s", ref), &oid) == 0 &&
-	    (ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]) &&
+	    (ref[0] == 'v' || ref[0] == 'V') && isdigit((unsigned char)ref[1]) &&
 	    ((repo_get_oid(the_repository, fmt("refs/tags/%s", ref + 1), &oid) == 0) +
 	     (repo_get_oid(the_repository, fmt("refs/tags/v%s", ref + 1), &oid) == 0) +
 	     (repo_get_oid(the_repository, fmt("refs/tags/V%s", ref + 1), &oid) == 0) == 1))
diff --git a/source/ui-tree.c b/source/ui-tree.c
index 9181b1b..f537442 100644
--- a/source/ui-tree.c
+++ b/source/ui-tree.c
@@ -93,7 +93,7 @@ static void print_binary_buffer(char *buf, unsigned long size)
 			      buf[idx] & 0xff);
 		html(" </td><td class='hex'>");
 		for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
-			ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
+			ascii[idx] = isgraph((unsigned char)buf[idx]) ? buf[idx] : '.';
 		ascii[idx] = '\0';
 		html_txt(ascii);
 		html("</td></tr>\n");
@@ -271,7 +271,7 @@ static void render_ls_item(const struct object_id *oid, const char *pathname,
 		free(buf);
 		strbuf_release(&linkpath);
 	}
-	htmlf("</td><td class='ls-size'>%li</td>", size);
+	htmlf("</td><td class='ls-size'>%lu</td>", size);
 
 	html("<td>");
 	cgit_log_link("log", NULL, "button", ctx.qry.head,