Handle references properties of the Exception class

Fixes GH-16188
Closes GH-16196

Fix GH-13097: Anonymous class reference in trigger_error / thrown Exception

Closes GH-13153.

Merge branch 'PHP-8.1' into PHP-8.2

* PHP-8.1:
Fix NUL byte in exception string terminating Exception::__toString()

Fix NUL byte in exception string terminating Exception::__toString()

Fixes GH-10810
Closes GH-10873

Merge branch 'PHP-8.1' into PHP-8.2

Merge branch 'PHP-8.0' into PHP-8.1

Fix GH-9709: Guard against current_execute_data==NULL in is_handle_exception_set

Revert "Store default object handlers alongside the class entry"

This reverts commit 9e6eab3c139b41dc976dd5305fd1a6e387e5e27f.

Reverted along a01dd9fedaecd2e5b95bc5c2e8d6542116addea

Revert "Store default object handlers alongside the class entry"

This reverts commit 9e6eab3c139b41dc976dd5305fd1a6e387e5e27f.

Reverted along a01dd9fedaecd2e5b95bc5c2e8d6542116addeae.

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Store default object handlers alongside the class entry

Object handlers being separate from class entries is a legacy inherited from PHP 5. Today it has little benefit to keep them separate:

Store default object handlers alongside the class entry

Object handlers being separate from class entries is a legacy inherited from PHP 5. Today it has little benefit to keep them separate: in fact, accessing object handlers usually requires not-so-safe hacks.
While it is possible to swap handlers in a custom installed create_object handler, this mostly is tedious, as well as it requires allocating the object handlers struct at runtime, possibly caching it etc..

This allows extensions, which intend to observe other classes to install their own class handlers.
The life cycle of internal classes may now be simply observed by swapping the class handlers in post_startup stage.
The life cycle of userland classes may be observed by iterating over the new classes in zend_compile_file and zend_compile_string and then swapping their handlers.

In general, this would also be a first step in directly tying the object handlers to classes. Especially given that I am not aware of any case where the object handlers would be different between various instances of a given class.

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

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Add support for class constants in stubs (#7434)

Improve error message class type

Refer to interfaces/enums instead of classes in more places.

Closes GH-7792
Closes GH-8187

fix [-Wstrict-prototypes] buid warnings

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Don't overwrite unwind exception

Don't overwrite unwind exception

When killing a coroutine by throwing an unwind exit into it during
an I/O operation, the I/O failure may result in an exception being
thrown, which w

Don't overwrite unwind exception

When killing a coroutine by throwing an unwind exit into it during
an I/O operation, the I/O failure may result in an exception being
thrown, which will replace the unwind exit exception and the
coroutine will ultimately not exit. This patch avoids this by
ignoring the newly thrown exception and keeping the unwind exit
exception.

Closes GH-7459.

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Only assign $severity for ErrorException

This code is used by generic EH_THROW with arbitrary Exception
types, while only ErrorException has a $severity property. We
don't want this

Only assign $severity for ErrorException

This code is used by generic EH_THROW with arbitrary Exception
types, while only ErrorException has a $severity property. We
don't want this code to add $severity properties to random
exception types like PDOException.

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Fix bug #81303 improve match errors

Add additional double to string APIs

zend_double_to_str() converts a double to string in the way that
(string) would (using %.*H using precision).

smart_str_append_double() prov

Add additional double to string APIs

zend_double_to_str() converts a double to string in the way that
(string) would (using %.*H using precision).

smart_str_append_double() provides some more fine control over
the precision, and whether a zero fraction should be appeneded
for whole numbers.

A caveat here is that raw calls to zend_gcvt and going through
s*printf has slightly different behavior for the degenarate
precision=0 case. zend_gcvt will add a dummy E+0 in that case,
while s*printf convert this to precision=1 and will not. I'm
going with the s*printf behavior here, which is more common,
but does result in a minor change to the precision.phpt test.

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Remove leading underscore for _zend_hash_find_known_hash (#7260)

Convert zend_hash_find_ex(..., 1) to zend_hash_find_known_hash(...)
Convert zend_hash_find_ex(..., 0) to zend_hash_find(.

Remove leading underscore for _zend_hash_find_known_hash (#7260)

Convert zend_hash_find_ex(..., 1) to zend_hash_find_known_hash(...)
Convert zend_hash_find_ex(..., 0) to zend_hash_find(...)

Also add serializable changes to UPGRADING.INTERNALS summary

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Fixed some spaces used instead of tabs

Allow creating Graceful/UnwindExit and use when destroying a fiber (#7174)

Direct creation of GracefulExit allows the the special exception object to be transfered and thrown into a destroye

Allow creating Graceful/UnwindExit and use when destroying a fiber (#7174)

Direct creation of GracefulExit allows the the special exception object to be transfered and thrown into a destroyed fiber using the same path as any other exception thrown into a fiber instead of needing to check for a flag.

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Convert exception during inheritance to fatal error

Now that inheritance can throw deprecations again, these may be
converted to exception by a custom error handler. In this case
we

Convert exception during inheritance to fatal error

Now that inheritance can throw deprecations again, these may be
converted to exception by a custom error handler. In this case
we need to convert the exception to a fatal error, as inheritance
cannot safely throw in the general case.

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Use common formatting for backtraces (#6977)

This makes debug_print_backtrace() use the same formatting as exception
backtraces. The only difference is that the final #{main} is omitted,

Use common formatting for backtraces (#6977)

This makes debug_print_backtrace() use the same formatting as exception
backtraces. The only difference is that the final #{main} is omitted,
because it wouldn't make sense for limited backtraces, and wasn't there
previously either.

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Remove some unnecessary exception type checks

These types are enforced by typed properties now.

Implement Fibers

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

Closes GH-6875.

Convert error filename to zend_string

Error handling functions/callbacks now accept the error filename
as a zend_string* instead of a const char*.