Fix issue #101

build.bat

@@ -43,7 +43,7 @@ del *.ilk > NUL 2> NUL
 
 cl %compiler_settings% "src\main.cpp" ^
 	/link %linker_settings% -OUT:%exe_name% ^
-	&& odin run examples/demo.odin -opt=0 -collection=foo=W:\Odin\core
+	&& odin run examples/demo.odin -opt=0
 	rem && odin docs core/fmt.odin
 
 del *.obj > NUL 2> NUL

core/_preload.odin

@@ -440,7 +440,7 @@ __get_map_header :: proc(m: ^$T/map[$K]$V) -> __Map_Header #cc_contextless {
 __get_map_key :: proc(key: $K) -> __Map_Key #cc_contextless {
 	map_key: __Map_Key;
 	ti := type_info_base_without_enum(type_info_of(K));
-	match _ in ti {
+	match _ in ti.variant {
 	case Type_Info.Integer:
 		match 8*size_of(key) {
 		case   8: map_key.hash = u128((  ^u8)(&key)^);