Windows is hard.

src/cc-compat.h

@@ -51,16 +51,19 @@
 #	if (SIZE_MAX == ULLONG_MAX)
 #		define PRIuZ "I64u"
 #		define PRIxZ "I64x"
+#		define PRIXZ "I64X"
 #		define PRIdZ "I64d"
 #	else
 #		define PRIuZ "Iu"
 #		define PRIxZ "Ix"
+#		define PRIXZ "IX"
 #		define PRIdZ "Id"
 #	endif
 
 #else
 #	define PRIuZ "zu"
 #	define PRIxZ "zx"
+#	define PRIXZ "zX"
 #	define PRIdZ "zd"
 #endif
 

src/transports/winhttp.c

@@ -631,7 +631,7 @@ static int write_chunk(HINTERNET request, const char *buffer, size_t len)
 	git_buf buf = GIT_BUF_INIT;
 
 	/* Chunk header */
-	git_buf_printf(&buf, "%zX\r\n", len);
+	git_buf_printf(&buf, "%"PRIXZ"\r\n", len);
 
 	if (git_buf_oom(&buf))
 		return -1;

tests/clar_libgit2.h

@@ -40,7 +40,7 @@
 #define cl_win32_pass(expr) do { \
 	int _win32_res; \
 	if ((_win32_res = (expr)) == 0) { \
-		giterr_set(GITERR_OS, "Returned: %d, system error code: %d", _win32_res, GetLastError()); \
+		giterr_set(GITERR_OS, "Returned: %d, system error code: %lu", _win32_res, GetLastError()); \
 		cl_git_report_failure(_win32_res, 0, __FILE__, __LINE__, "System call failed: " #expr); \
 	} \
 	} while(0)

tests/index/addall.c

@@ -123,8 +123,8 @@ static void check_stat_data(git_index *index, const char *path, bool match)
 		cl_assert(st.st_ctime == entry->ctime.seconds);
 		cl_assert(st.st_mtime == entry->mtime.seconds);
 		cl_assert(st.st_size == entry->file_size);
-		cl_assert(st.st_uid  == (uid_t)entry->uid);
-		cl_assert(st.st_gid  == (gid_t)entry->gid);
+		cl_assert((uint32_t)st.st_uid  == entry->uid);
+		cl_assert((uint32_t)st.st_gid  == entry->gid);
 		cl_assert_equal_i_fmt(
 			GIT_MODE_TYPE(st.st_mode), GIT_MODE_TYPE(entry->mode), "%07o");
 		if (cl_is_chmod_supported())