------- Comment #1 from kris dot van dot hees at oracle dot com 2008-06-09 13:25 ------- It sound like AVR will need a different specification for CHAR32_TYPE given that the default in c-common.c (unsigned int) won't work. Which would go in the appropriate file in gcc/config/avr, similar to how WCHAR_TYPE is defined. That still won't solve the hardcoded specification of the typedef in the test, but that is going to be addressed "Real Soon Now" in an upcoming patch to provide a macro (by the compiler) for the underlying types that are used for char16_t and char32_t, which will then be used in the tests to get rid of the hardcoded underlying type in the typedefs.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36470
