I'm investigating the various segfault bugs in PHP 7.3.0.
I was looking at ext/opcache/ZendAccelerator.c:545 and :552, where
accel_init_interned_string_for_php returns normal strings instead of
interned strings. As I understand it, there could be (buggy) code which
frees a string prematurely (possible with normal string but would not
happen with interned), causing corruption.
Is this a bug or just some Zend quirk?