Don't keep HashTable.pDestructor in SHM and always set it into ZVAL_PTR_DTOR in zval_array_dup().
Keeping pointer to a function in SHM is not safe because of ASLR.

AST is not COPYABLE anymore and its reference-counter doesn't have to be initialized by 2.

Set and keep HASH_FLAG_STATIC_KEYS for all HashTables stored in SHM (or file cache).

Merge branch 'PHP-7.2'

* PHP-7.2:
Fixed "opcache.file_cache_fallback" mode.

Merge branch 'PHP-7.1' into PHP-7.2

* PHP-7.1:
Fixed "opcache.file_cache_fallback" mode.

Fixed "opcache.file_cache_fallback" mode.

It's not safe to change value of ZCG(accel_directives).file_cache_only, becuse it might be altered by INI subsystem.
Use global variable instead.

Use macros to update specific parts of GC_TYPE_INFO() (direct assignments to GC_TYPE(), GC_FLAGS() and GC_INFO() are prohibited)

Optimized fast_memcpy with AVX instructions

Great thanks to welting for helping :)

Moved "zval.u2.cache_slot" into free room of "zend_op"

Changed CATCH instruction format (extended_value moved into op2, op2 into result, result into extended_value)

Access HashTable.u.flags through HT_FLAGS() macro.

Get rid of IS_TYPE_COPYABLE.

A cheaper way to reset type flags.

Cleanup (at persistence stage we may get only "user" functions; regular op_arrays can't be referenced from different places)

year++

year++

year++

Use GC_FLAGS_SHIFT in a few more places

Rather than hardcoding 8.

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-count

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-counting (disabled for now).
These macros are going to be used to eliminate race-condintions during reference-counting on data shared between threads.

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Constify key access for hash and formal params

Keys created in shared memory and won't be modified and are free'd on
restart. Otherwise, keys passed to functions should not be modified,

Constify key access for hash and formal params

Keys created in shared memory and won't be modified and are free'd on
restart. Otherwise, keys passed to functions should not be modified,
too.

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AST don't have to be COPYABLE anymore.

Always use IS_CONSTANT_AST (IS_CONSTANT is removed).

Changed zend_ast_ref structure to use only one allocation, removing dichotomy between heap/arena ASTs.

Refactored recursion pretection

Changed the way VM accesses constant operands in 64-bit builds.