PHP 8.4 is supposed to be built with vs17 (aka. Visual Studio 2022)[1],
so we also do this for CI.
We mark gh8841.phpt as xfail for known reasons.
[1] <https://windows.php.net/>
This flag was never necessary. We know a static variable is uninitialized (i.e.
the initializer has never been called) iff the zval in the static variable array
does not contain a reference.
Prompted by a related issue in ext-uopz reported by Christoph.
The destructor of generators is a no-op when the generator is running in a fiber,
because the fiber may resume the generator. Normally the destructor
is not called in this case, but this can happen during shutdown.
We detect that a generator is running in a fiber with the
ZEND_GENERATOR_IN_FIBER flag.
This change fixes two cases not handled by this mechanism:
- The ZEND_GENERATOR_IN_FIBER flag was not added when resuming a "yield from $nonGenerator"
- When a generator that is running in a fiber has multiple children (aka multiple generators yielding from it), all of them could be considered to also run in a fiber (only one actually is), and could leak if not destroyed before shutdown.
I don't understand the rationale of fatal erroring here. It seems this should
properly unprotect the compared elements when returning up the stack.
Related to GH-14980
$obj->ro[] = 42;, passByRef($obj->ro); and the likes should emit an indirect
modification error message. This message already existed but was used
inconsistently.
This was only partially fixed in PHP-8.3. Backports and fixes the case for both
initialized and uninitialized property writes.
Fixes GH-14969
Closes GH-14971
Increase the reserved stack size in ASAN builds, as instrumentation use more stack.
Increase the max allowed stack size in some tests, and enable these tests under ASAN.
Use __builtin_frame_address(0), instead of some stack variable, when we need a stack address, as ASAN may store local variables outside of the real stack.
Fiber switching was disabled during destructor execution due to conflicts
with the garbage collector. This unfortunately introduces a function color
problem: destructors can not call functions that may switch Fibers.
In this change we update the GC so that Fiber switching during GC is safe. In
turn we allow Fiber switching during destrutor execution.
The GC executes destructors in a dedicated Fiber. If a destructor suspends, the
Fiber is owned by userland and a new dedicated Fiber is created to execute the
remaining destructors. Destructor suspension results in a resurection of the
object, which is handled as usual: The object is not considered garbage anymore,
but may be collected in a later run.
When the GC is executed in the main context (not in a Fiber), then destructors
are executed in the main context as well because there is no risk of conflicting
with GC in this case (main context can not suspend).
Fixes GH-11389
Closes GH-13460
You cannot return or yield a reference to a nullsafe chain. This was
checked already in zend_compile_return but not yet in
zend_compile_yield.
Closes GH-14716.
is_zend_ptr() expected zend_mm_heap.huge_list to be circular, but it's in fact NULL-terminated. It could crash when at least one huge block exists and the ptr did not belong to any block.
Gina Peter Bnayard