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

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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Fix function/file mixup in backtrace printing

The error says "Function name" is not a string, but it's actually
investigating the "file" field, not "function".

Closes GH-6768.

Fix handling of throwing undef var in verify return

If we have an undefined variable and null is not accepted by the
return type, we want to throw just the undef var error.

In t

Fix handling of throwing undef var in verify return

If we have an undefined variable and null is not accepted by the
return type, we want to throw just the undef var error.

In this case this lead to an infinite loop, because we overwrite
the exception opline in SAVE_OPLINE and it does not get reset
when chaining into a previous exception. Add an assertiong to
catch this case earlier.

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Convert exception instanceof checks to assertions

Improve default value handling of Exception constructors

Closes GH-6166

Rename zend_error_notify APIs to zend_observer_error*

Improve type declarations for Zend APIs

Voidification of Zend API which always succeeded
Use bool argument types instead of int for boolean arguments
Use bool return type for functio

Improve type declarations for Zend APIs

Voidification of Zend API which always succeeded
Use bool argument types instead of int for boolean arguments
Use bool return type for functions which return true/false (1/0)
Use zend_result return type for functions which return SUCCESS/FAILURE as they don't follow normal boolean semantics

Closes GH-6002

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Fixed bug #79948

Make sure we don't execute further scripts if one of them encountered
an exit exception.

Also make sure that we free file handles that end up unused due to

Fixed bug #79948

Make sure we don't execute further scripts if one of them encountered
an exit exception.

Also make sure that we free file handles that end up unused due to
an early abort in php_execute_scripts(), which turned up as an
issue in the added test case.

Finally, make use of EG(exit_status) in the places where we
zend_eval_string_ex, instead of unconditionally assigning exit
code 254. If an error occurs, the error handler will already set
exit status 255.

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Accept zend_object* in zend_update_property

Accept zend_object* in zend_unset_property

Accept zend_object* in zend_get_exception_base

Accept zend_object in zend_read_property

Add more argument types to stubs

Closes GH-5943

Implement named parameters

From an engine perspective, named parameters mainly add three
concepts:

* The SEND_* opcodes now accept a CONST op2, which is the
argument nam

Implement named parameters

From an engine perspective, named parameters mainly add three
concepts:

* The SEND_* opcodes now accept a CONST op2, which is the
argument name. For now, it is looked up by linear scan and
runtime cached.
* This may leave UNDEF arguments on the stack. To avoid having
to deal with them in other places, a CHECK_UNDEF_ARGS opcode
is used to either replace them with defaults, or error.
* For variadic functions, EX(extra_named_params) are collected
and need to be freed based on ZEND_CALL_HAS_EXTRA_NAMED_PARAMS.

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

Closes GH-5357.

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[RFC] Make string length for getTraceAsString() configurable

Add a `zend.exception_string_param_max_len` ini setting.
(same suffix as `log_errors_max_len`)

Allow values between

[RFC] Make string length for getTraceAsString() configurable

Add a `zend.exception_string_param_max_len` ini setting.
(same suffix as `log_errors_max_len`)

Allow values between 0 and 1000000 bytes.
For example, with zend.exception_string_param_max_len=0,
"" would represent the empty string, and "..." would represent something
longer than the empty string.
Previously, this was hardcoded as exactly 15 bytes.

Discussion: https://externals.io/message/110717

Closes GH-5769

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Fix warnings of strict-prototypes

Closes GH-5887.

Add missing zpp_none call in Exception::__wakeup

Introduce error notification callbacks that are run independant of zend_error_cb

Review the usage of apostrophes in error messages

Closes GH-5590

Implement match expression

RFC: https://wiki.php.net/rfc/match_expression_v2

Closes GH-5371.

Remove no_separation flag

Remove proto comments from C files

Closes GH-5758

Fix leak when setting cyclic previous exception in finally

A curious exception handling pattern found in Symfony's HttpClient.

Make exit() unwind properly

exit() is now internally implemented by throwing an exception,
performing a normal stack unwind and a clean shutdown. This ensures
that no persistent reso

Make exit() unwind properly

exit() is now internally implemented by throwing an exception,
performing a normal stack unwind and a clean shutdown. This ensures
that no persistent resource leaks occur.

The exception is internal, cannot be caught and does not result in
the execution of finally blocks. This may be relaxed in the future.

Closes GH-5768.

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