What happens is that with macro XML_MIN_SIZE defined,
for UTF-16 macro IS_INVALID_CHAR was being set to ..
> #define IS_INVALID_CHAR(enc, p, n) (AS_NORMAL_ENCODING(enc)->isInvalid##n(enc, p))
.. which calls NULL pointers in .isInvalid{2,3,4} at runtime.
For UTF-16 we actually need what xmltok_impl.c does for macro
IS_INVALID_CHAR when it has not yet been defined:
> # ifndef IS_INVALID_CHAR
> # define IS_INVALID_CHAR(enc, ptr, n) (0)
> # endif
So the fix is a combination of these two:
- Use .isInvalid{2,3,4} where needed and available and
- return 0/false for UTF-16 where .isInvalid{2,3,4} are NULL.
ed36812db2