[asan] Enable memtrinsics interception for RTEMS
Replace decltype(memcpy) with decltype(__asan_memcpy) because memcpy
has not been defined in any headers on RTEMS.  Similarly for memmove
and memset.
@@ -31,14 +31,14 @@ void *__asan_memmove(void *to, const void *from, uptr size) {
ASAN_MEMMOVE_IMPL(nullptr, to, from, size);
}
-#if SANITIZER_FUCHSIA
+#if SANITIZER_FUCHSIA || SANITIZER_RTEMS
// Fuchsia doesn't use sanitizer_common_interceptors.inc, but the only
// things there it wants are these three. Just define them as aliases
// here rather than repeating the contents.
-decltype(memcpy) memcpy[[gnu::alias("__asan_memcpy")]];
-decltype(memmove) memmove[[gnu::alias("__asan_memmove")]];
-decltype(memset) memset[[gnu::alias("__asan_memset")]];
+decltype(__asan_memcpy) memcpy[[gnu::alias("__asan_memcpy")]];
+decltype(__asan_memmove) memmove[[gnu::alias("__asan_memmove")]];
+decltype(__asan_memset) memset[[gnu::alias("__asan_memset")]];
-#endif // SANITIZER_FUCHSIA
+#endif // SANITIZER_FUCHSIA || SANITIZER_RTEMS
