diff --git a/examples/blame.c b/examples/blame.c
index b126c0d33..9288352e2 100644
--- a/examples/blame.c
+++ b/examples/blame.c
@@ -37,8 +37,8 @@ static void parse_opts(struct opts *o, int argc, char *argv[]);
 
 int main(int argc, char *argv[])
 {
-	int i, line, break_on_null_hunk;
-	size_t rawsize;
+	int line, break_on_null_hunk;
+	size_t i, rawsize;
 	char spec[1024] = {0};
 	struct opts o = {0};
 	const char *rawdata;
diff --git a/examples/network/clone.c b/examples/network/clone.c
index b2d80ed01..caf41cca8 100644
--- a/examples/network/clone.c
+++ b/examples/network/clone.c
@@ -48,6 +48,8 @@ static void print_progress(const progress_data *pd)
 
 static int sideband_progress(const char *str, int len, void *payload)
 {
+	(void)payload; // unused
+
 	printf("remote: %*s", len, str);
 	fflush(stdout);
 	return 0;
diff --git a/src/iterator.c b/src/iterator.c
index 949949388..2c3a87af0 100644
--- a/src/iterator.c
+++ b/src/iterator.c
@@ -1852,7 +1852,6 @@ int git_iterator_walk(
 	const git_index_entry **iterator_item;	/* next in each iterator */
 	const git_index_entry **cur_items;		/* current path in each iter */
 	const git_index_entry *first_match;
-	int cur_item_modified;
 	size_t i, j;
 	int error = 0;
 
@@ -1875,7 +1874,6 @@ int git_iterator_walk(
 			cur_items[i] = NULL;
 
 		first_match = NULL;
-		cur_item_modified = 0;
 
 		/* Find the next path(s) to consume from each iterator */
 		for (i = 0; i < cnt; i++) {
@@ -1898,9 +1896,6 @@ int git_iterator_walk(
 
 					first_match = iterator_item[i];
 					cur_items[i] = iterator_item[i];
-				} else if (path_diff > 0) {
-					/* No entry for the current item, this is modified */
-					cur_item_modified = 1;
 				} else if (path_diff == 0) {
 					cur_items[i] = iterator_item[i];
 				}
diff --git a/src/odb.c b/src/odb.c
index 7a718f5d6..b2d635109 100644
--- a/src/odb.c
+++ b/src/odb.c
@@ -53,7 +53,7 @@ static int load_alternates(git_odb *odb, const char *objects_dir, int alternate_
 int git_odb__format_object_header(char *hdr, size_t n, git_off_t obj_len, git_otype obj_type)
 {
 	const char *type_str = git_object_type2string(obj_type);
-	int len = p_snprintf(hdr, n, "%s %lld", type_str, obj_len);
+	int len = p_snprintf(hdr, n, "%s %lld", type_str, (long long)obj_len);
 	assert(len > 0 && len <= (int)n);
 	return len+1;
 }
diff --git a/src/openssl_stream.c b/src/openssl_stream.c
index 90af4ae6e..958252e9f 100644
--- a/src/openssl_stream.c
+++ b/src/openssl_stream.c
@@ -413,6 +413,7 @@ void openssl_free(git_stream *stream)
 {
 	openssl_stream *st = (openssl_stream *) stream;
 
+	git__free(st->host);
 	git__free(st->cert_info.data);
 	git_stream_free(st->io);
 	git__free(st);
diff --git a/src/stash.c b/src/stash.c
index 59ecd3b07..acf89442a 100644
--- a/src/stash.c
+++ b/src/stash.c
@@ -793,7 +793,6 @@ static int stage_new_file(const git_index_entry **entries, void *data)
 
 static int stage_new_files(
 	git_index **out,
-	git_repository *repo,
 	git_tree *parent_tree,
 	git_tree *tree)
 {
@@ -886,7 +885,7 @@ int git_stash_apply(
 	 */
 	} else if ((opts.flags & GIT_STASH_APPLY_REINSTATE_INDEX) == 0) {
 		if ((error = stage_new_files(
-				&stash_adds, repo, stash_parent_tree, stash_tree)) < 0 ||
+				&stash_adds, stash_parent_tree, stash_tree)) < 0 ||
 			(error = merge_indexes(
 				&unstashed_index, repo, stash_parent_tree, repo_index, stash_adds)) < 0)
 			goto cleanup;
diff --git a/src/submodule.c b/src/submodule.c
index 0cd6bb913..17e1a3561 100644
--- a/src/submodule.c
+++ b/src/submodule.c
@@ -749,7 +749,7 @@ const char *git_submodule_update_to_str(git_submodule_update_t update)
 {
 	int i;
 	for (i = 0; i < (int)ARRAY_SIZE(_sm_update_map); ++i)
-		if (_sm_update_map[i].map_value == update)
+		if (_sm_update_map[i].map_value == (int)update)
 			return _sm_update_map[i].str_match;
 	return NULL;
 }
diff --git a/tests/checkout/index.c b/tests/checkout/index.c
index 89b014586..0d220e141 100644
--- a/tests/checkout/index.c
+++ b/tests/checkout/index.c
@@ -145,7 +145,7 @@ void test_checkout_index__honor_coresymlinks_default(void)
 
 	const char *url = git_repository_path(g_repo);
 
-	getcwd(cwd, sizeof(cwd));
+	cl_assert(getcwd(cwd, sizeof(cwd)) != NULL);
 	cl_assert_equal_i(0, p_mkdir("readonly", 0555)); // Read-only directory
 	cl_assert_equal_i(0, chdir("readonly"));
 	cl_git_pass(git_repository_init(&repo, "../symlink.git", true));
diff --git a/tests/clar/sandbox.h b/tests/clar/sandbox.h
index ea9e35ca9..4b83bf31d 100644
--- a/tests/clar/sandbox.h
+++ b/tests/clar/sandbox.h
@@ -65,7 +65,7 @@ static void clar_unsandbox(void)
 	if (_clar_path[0] == '\0')
 		return;
 
-	chdir("..");
+	cl_must_pass(chdir(".."));
 
 	fs_rm(_clar_path);
 }
diff --git a/tests/filter/file.c b/tests/filter/file.c
index 8243a026a..599f4e54b 100644
--- a/tests/filter/file.c
+++ b/tests/filter/file.c
@@ -91,9 +91,9 @@ void test_filter_file__apply_stream(void)
 
 	cl_git_pass(git_filter_list_push(fl, crlf, NULL));
 
-	cl_git_pass(git_filter_list_stream_file(fl, g_repo, "all-crlf", (git_writestream *)&write_target));
+	cl_git_pass(git_filter_list_stream_file(fl, g_repo, "all-crlf", &write_target.base));
 	cl_assert_equal_s("crlf\ncrlf\ncrlf\ncrlf\n", write_target.buf.ptr);
 
 	git_filter_list_free(fl);
-	write_target.base.free((struct git_writestream *)&write_target);
+	write_target.base.free(&write_target.base);
 }
diff --git a/tests/index/racy.c b/tests/index/racy.c
index fda1ed239..3b26aabf4 100644
--- a/tests/index/racy.c
+++ b/tests/index/racy.c
@@ -3,6 +3,7 @@
 
 #include "buffer.h"
 #include "index.h"
+#include "repository.h"
 
 static git_repository *g_repo;
 
diff --git a/tests/stash/apply.c b/tests/stash/apply.c
index 1056ce7eb..f26b73b19 100644
--- a/tests/stash/apply.c
+++ b/tests/stash/apply.c
@@ -96,7 +96,7 @@ void test_stash_apply__with_existing_file(void)
 
 void test_stash_apply__merges_new_file(void)
 {
-	git_index_entry *ancestor, *our, *their;
+	const git_index_entry *ancestor, *our, *their;
 
 	cl_git_mkfile("stash/where", "committed before stash\n");
 	cl_git_pass(git_index_add_bypath(repo_index, "where"));