This is useful for coverage. While it is currently safe to just
skip over the SWITCH_* opcodes, this may not be true in the future
due to opcache optimizations, so it's safer to disable emission of
SWITCH_* opcodes entirely.
RFC: https://wiki.php.net/rfc/null_coalesce_equal_operator
$a ??= $b is $a ?? ($a = $b), with the difference that $a is only
evaluated once, to the degree that this is possible. In particular
in $a[foo()] ?? $b function foo() is only ever called once.
However, the variable access themselves will be reevaluated.
Instead of interleaving creation of live-ranges with the main
compiler code, compute them in a separate pass over the opcodes
as part of pass_two. Additionally, do not keep live ranges
synchronized during optimization in opcache and instead use the
same mechanism to recompute them after optimization.
get_gc is assumed to be non-NULL in master, and get_gc can be called
on the iterator wrapper if during generator GC, so we need to define
this handler. For now it's just a dummy, though for full support we'd
have to also add a get_gc iterator handler that is called here.
I thought these were redundant, because we already NULL out the
clone_obj object handler. However, it turns out that reflection is
using private __clone() to determine clonability (isCloneable) for
the case where we only have a class, rather than an object.
As such, removing these methods would be a BC break.
This reverts commit e7131a4e9f.
This reverts commit 55bd88ce0d.
Removed files used to provide building Zend engine separately using
Autoconf and Automake:
cd Zend && ./buildconf && ./configure
Since Zend engine is tightly integrated in the PHP code itself and
current root configure.ac and acinclude provide this patch removes
these. Removed files also included several obsolete macros and
Automake dependency which is not used in main *nix PHP build system.
We already detect the case where we're entirely outside a class --
now also check whether there actually is a parent.
This is a minor BC break, in that code that was never executed
might have previously contained an invalid parent:: reference without
generating an error.
Dmitry Stogov