thodg/libgit2

diff --git a/include/git2/repository.h b/include/git2/repository.h
index a986859..f520d54 100644
--- a/include/git2/repository.h
+++ b/include/git2/repository.h
@@ -466,6 +466,11 @@ GIT_EXTERN(void) git_repository_set_index(git_repository *repo, git_index *index
  *
  * Use this function to get the contents of this file. Don't forget to
  * remove the file after you create the commit.
+ *
+ * @param buffer Buffer to write data into or NULL to just read required size
+ * @param len Length of buffer in bytes
+ * @param repo Repository to read prepared message from
+ * @return Bytes written to buffer, GIT_ENOTFOUND if no message, or -1 on error
  */
 GIT_EXTERN(int) git_repository_message(char *buffer, size_t len, git_repository *repo);
 
diff --git a/src/message.c b/src/message.c
index e6dedc9..791b694 100644
--- a/src/message.c
+++ b/src/message.c
@@ -82,5 +82,5 @@ int git_message_prettify(char *message_out, size_t buffer_size, const char *mess
 
 done:
 	git_buf_free(&buf);
-	return out_size;
+	return (int)out_size;
 }
diff --git a/src/repository.c b/src/repository.c
index 8005797..bf19d07 100644
--- a/src/repository.c
+++ b/src/repository.c
@@ -1328,39 +1328,27 @@ int git_repository_message(char *buffer, size_t len, git_repository *repo)
 {
 	git_buf buf = GIT_BUF_INIT, path = GIT_BUF_INIT;
 	struct stat st;
-	ssize_t size;
 	int error;
 
 	if (git_buf_joinpath(&path, repo->path_repository, MERGE_MSG_FILE) < 0)
 		return -1;
 
-	error = p_stat(git_buf_cstr(&path), &st);
-	if (error < 0) {
+	if ((error = p_stat(git_buf_cstr(&path), &st)) < 0) {
 		if (errno == ENOENT)
 			error = GIT_ENOTFOUND;
-
-		git_buf_free(&path);
-		return error;
 	}
-
-	if (buffer == NULL) {
-		git_buf_free(&path);
-		return (int)st.st_size;
+	else if (buffer != NULL) {
+		error = git_futils_readbuffer(&buf, git_buf_cstr(&path));
+		git_buf_copy_cstr(buffer, len, &buf);
 	}
 
-	if (git_futils_readbuffer(&buf, git_buf_cstr(&path)) < 0)
-		goto on_error;
-
-	memcpy(buffer, git_buf_cstr(&buf), len);
-	size = git_buf_len(&buf);
-
 	git_buf_free(&path);
 	git_buf_free(&buf);
-	return size;
 
-on_error:
-	git_buf_free(&path);
-	return -1;
+	if (!error)
+		error = (int)st.st_size + 1; /* add 1 for NUL byte */
+
+	return error;
 }
 
 int git_repository_message_remove(git_repository *repo)
diff --git a/src/transports/http.c b/src/transports/http.c
index 85fec41..ce382c3 100644
--- a/src/transports/http.c
+++ b/src/transports/http.c
@@ -233,7 +233,7 @@ static int http_recv_cb(gitno_buffer *buf)
 	if (t->error < 0)
 		return t->error;
 
-	return buf->offset - old_len;
+	return (int)(buf->offset - old_len);
 }
 
 /* Set up the gitno_buffer so calling gitno_recv() grabs data from the HTTP response */
diff --git a/src/win32/posix.h b/src/win32/posix.h
index def3a76..14caae4 100644
--- a/src/win32/posix.h
+++ b/src/win32/posix.h
@@ -19,14 +19,6 @@ GIT_INLINE(int) p_link(const char *old, const char *new)
 	return -1;
 }
 
-GIT_INLINE(int) p_symlink(const char *old, const char *new)
-{
-	GIT_UNUSED(old);
-	GIT_UNUSED(new);
-	errno = ENOSYS;
-	return -1;
-}
-
 GIT_INLINE(int) p_mkdir(const char *path, mode_t mode)
 {
 	wchar_t* buf = gitwin_to_utf16(path);
diff --git a/tests-clar/checkout/checkout.c b/tests-clar/checkout/checkout.c
index d6b79b4..ba14194 100644
--- a/tests-clar/checkout/checkout.c
+++ b/tests-clar/checkout/checkout.c
@@ -33,7 +33,7 @@ static void test_file_contents(const char *path, const char *expectedcontents)
 	actuallen = p_read(fd, buffer, 1024);
 	cl_git_pass(p_close(fd));
 
-	cl_assert_equal_i(actuallen, expectedlen);
+	cl_assert_equal_sz(actuallen, expectedlen);
 	cl_assert_equal_s(buffer, expectedcontents);
 }
 
diff --git a/tests-clar/clar_libgit2.h b/tests-clar/clar_libgit2.h
index eab6c3d..b4ee74c 100644
--- a/tests-clar/clar_libgit2.h
+++ b/tests-clar/clar_libgit2.h
@@ -25,6 +25,8 @@
  */
 #define cl_git_fail(expr) cl_must_fail(expr)
 
+#define cl_assert_equal_sz(sz1,sz2) cl_assert((sz1) == (sz2))
+
 /*
  * Some utility macros for building long strings
  */
diff --git a/tests-clar/core/buffer.c b/tests-clar/core/buffer.c
index b6274b0..972567e 100644
--- a/tests-clar/core/buffer.c
+++ b/tests-clar/core/buffer.c
@@ -665,7 +665,7 @@ static void assert_unescape(char *expected, char *to_unescape) {
 	cl_git_pass(git_buf_sets(&buf, to_unescape));
 	git_buf_unescape(&buf);
 	cl_assert_equal_s(expected, buf.ptr);
-	cl_assert_equal_i(strlen(expected), buf.size);
+	cl_assert_equal_sz(strlen(expected), buf.size);
 
 	git_buf_free(&buf);
 }
diff --git a/tests-clar/refs/list.c b/tests-clar/refs/list.c
index ac3cc00..f92bf48 100644
--- a/tests-clar/refs/list.c
+++ b/tests-clar/refs/list.c
@@ -36,7 +36,7 @@ void test_refs_list__all(void)
 	/* We have exactly 9 refs in total if we include the packed ones:
 	 * there is a reference that exists both in the packfile and as
 	 * loose, but we only list it once */
-	cl_assert_equal_i(ref_list.count, 10);
+	cl_assert_equal_i((int)ref_list.count, 10);
 
 	git_strarray_free(&ref_list);
 }
diff --git a/tests-clar/status/status_data.h b/tests-clar/status/status_data.h
index 043b830..85a7cd6 100644
--- a/tests-clar/status/status_data.h
+++ b/tests-clar/status/status_data.h
@@ -44,7 +44,7 @@ static const unsigned int entry_statuses0[] = {
 	GIT_STATUS_WT_NEW,
 };
 
-static const size_t entry_count0 = 16;
+static const int entry_count0 = 16;
 
 /* entries for a copy of tests/resources/status with all content
  * deleted from the working directory
@@ -86,7 +86,7 @@ static const unsigned int entry_statuses2[] = {
 	GIT_STATUS_WT_DELETED,
 };
 
-static const size_t entry_count2 = 15;
+static const int entry_count2 = 15;
 
 /* entries for a copy of tests/resources/status with some mods */
 
@@ -140,7 +140,7 @@ static const unsigned int entry_statuses3[] = {
 	GIT_STATUS_WT_NEW,
 };
 
-static const size_t entry_count3 = 22;
+static const int entry_count3 = 22;
 
 
 /* entries for a copy of tests/resources/status with some mods
@@ -199,4 +199,4 @@ static const unsigned int entry_statuses4[] = {
 	GIT_STATUS_WT_NEW,
 };
 
-static const size_t entry_count4 = 23;
+static const int entry_count4 = 23;
diff --git a/tests-clar/status/status_helpers.h b/tests-clar/status/status_helpers.h
index cffca66..3f9c1f5 100644
--- a/tests-clar/status/status_helpers.h
+++ b/tests-clar/status/status_helpers.h
@@ -2,12 +2,12 @@
 #define INCLUDE_cl_status_helpers_h__
 
 typedef struct {
-	size_t wrong_status_flags_count;
-	size_t wrong_sorted_path;
-	size_t entry_count;
+	int wrong_status_flags_count;
+	int wrong_sorted_path;
+	int entry_count;
 	const unsigned int* expected_statuses;
 	const char** expected_paths;
-	size_t expected_entry_count;
+	int expected_entry_count;
 } status_entry_counts;
 
 /* cb_status__normal takes payload of "status_entry_counts *" */
diff --git a/tests-clar/status/worktree.c b/tests-clar/status/worktree.c
index 2abf368..75975c9 100644
--- a/tests-clar/status/worktree.c
+++ b/tests-clar/status/worktree.c
@@ -683,7 +683,7 @@ static unsigned int filemode_statuses[] = {
 	GIT_STATUS_WT_NEW
 };
 
-static const size_t filemode_count = 8;
+static const int filemode_count = 8;
 
 void test_status_worktree__filemode_changes(void)
 {
@@ -697,7 +697,7 @@ void test_status_worktree__filemode_changes(void)
 	if (cl_is_chmod_supported())
 		cl_git_pass(git_config_set_bool(cfg, "core.filemode", true));
 	else {
-		unsigned int i;
+		int i;
 		cl_git_pass(git_config_set_bool(cfg, "core.filemode", false));
 
 		/* won't trust filesystem mode diffs, so these will appear unchanged */