use __typeof__ instead of typeof and __func__ instead of __ASSERT_FUNC for compatibility with other compilers and standard libraries (__ASSERT_FUNC seems to be a cygwin thing)

xassert.h

@@ -13,6 +13,6 @@ void xtest_internal_assert(const char* file, int line, const char* func, const c
 #undef assert
 
 #define assert(__e) ((__e) ? (void)0 : xtest_internal_assert(__FILE__, __LINE__, \
-						       __ASSERT_FUNC, #__e))
+						       __func__, #__e))
 
 #endif //defined(XTEST) && !defined(XTEST_XTEST_H)

xtest.h

@@ -104,7 +104,7 @@ int xtest_complete();
 
 
 #define force_types_equal(a, b) (void) _Generic(a, \
-        typeof(b): (void*)0                                            \
+        __typeof__(b): (void*)0                                            \
     )
 
 
@@ -112,8 +112,8 @@ int xtest_complete();
         force_types_equal(expected, actual); \
         int _xtest_res = (expr);                                              \
         if (!(_xtest_res)) {                                \
-            typeof(actual) _xtest_a = actual;                    \
-            typeof(expected) _xtest_e = expected;                \
+            __typeof__(actual) _xtest_a = actual;                    \
+            __typeof__(expected) _xtest_e = expected;                \
             enum xtest_type _xtest_type = xtest_get_type(actual);             \
             xtest_fail_assert(s, __FILE__, __LINE__, &_xtest_e, &_xtest_a, invert, _xtest_type); \
         } \