Fix GH-9323: crash when the VM enters userspace code via the GC

Closes GH-9323

Fix unexpected deprecated dynamic property warning (#9324)

Occurred when exit() with uncaught exception in finally block.

Remove useless UNEXPECTED around RETURN_VALUE_USED in specialized RETVAL handler (#9329)

This can lead to funny code like UNEXPECTED(1) which is non-sensical.

Implement constants in traits (#8888)

RFC: https://wiki.php.net/rfc/constants_in_traits

Include internal functions in the observer API

There are two main motivations to this:
a) The logic for handling internal and userland observation can be unified.
b) Unwinding of obs

Include internal functions in the observer API

There are two main motivations to this:
a) The logic for handling internal and userland observation can be unified.
b) Unwinding of observed functions on a bailout does notably not include observers. Even if users of observers were to ensure such handling themselves, it would be impossible to retain the relative ordering - either the user has to unwind all internal observed frames before the automatic unwinding (zend_observer_fcall_end_all) or afterwards, but not properly interleaved.

Signed-off-by: Bob Weinand <bobwei9@hotmail.com>

show more ...

Prevent fiber switching in tick function and signal handlers (#9028)

Don't shortcut empty oparray executions if zend_execute_ex has been overridden

Allow arbitrary const expressions in backed enums

Closes GH-7821
Closes GH-8190
Closes GH-8418

Fix GH-8661: Nullsafe in coalesce triggers undefined variable warning

Closes GH-8690

Make vm_interrupt and timed_out atomic (#8327)

This is done by adding a new zend_atomic_bool type. The type
definition is only available for compiler alignment and size info; it
shou

Make vm_interrupt and timed_out atomic (#8327)

This is done by adding a new zend_atomic_bool type. The type
definition is only available for compiler alignment and size info; it
should be treated as opaque and only the zend_atomic_bool_* family of
functions should be used.

Note that directly using atomic_bool is complicated. All C++ compilers
stdlibs that I checked typedef atomic_bool to std::atomic<bool>, which
can't be used in an extern "C" section, and there's at least one usage
of this in core, and probably more outside of it.

So, instead use platform specific functions, preferring compiler
intrinsics.

show more ...

Ensure vm_spec_handlers exists for all opcodes <= 255 so that user defined higher opcodes do not read outside buffer

This largely has no effect in practice, but ASAN will complain then.

JIT: Fix array clobbering by user error handler

Fixes oss-fuzz #46336

JIT: Fix array clobbering by user error handler

Fixes oss-fuzz #46336

Fix memory leak

Fixes oss-fuzz #44222

Remove JMPZNZ opcode

While JMPZNZ can avoid execution of a separate JMP opcode in some
cases, it also prevents smart branch optimization, so creating
JMPZNZ may actually have a negat

Remove JMPZNZ opcode

While JMPZNZ can avoid execution of a separate JMP opcode in some
cases, it also prevents smart branch optimization, so creating
JMPZNZ may actually have a negative effect. It also adds additional
complexity for optimizations.

Drop JMPZNZ in favor of JMPZ+JMP or JMPNZ+JMP.

Closes GH-7857.

show more ...

micro-optimization

Reset Bucket->key of deleted HastTable elemets to NULL.

This allows elimination of some Z_ISUNDEF(Bucket->val) checks.

Avoid useless symbol table reattaching on retutn from an included op_array

Don't execute INCLUDE for empty op_arrays.

Don't call zend_attach/detach_symbol_table() for op_arrays without local variables

Fix array clobbering by user error handler

Fixes oss-fuzz #42363

Move common code into helper

Combine ADDREF/DELREF

Fix array clobering by user error handler

Fixes oss-fuzz #42234

ZEND_INIT_FCALL is only produced when function exists at compile time (#7728)