zend_compiler, ...: use `uint8_t` instead of `zend_uchar` (#10621)

`zend_uchar` suggests that the value is an ASCII character, but here,
it's about very small integers. This is misleadi

zend_compiler, ...: use `uint8_t` instead of `zend_uchar` (#10621)

`zend_uchar` suggests that the value is an ASCII character, but here,
it's about very small integers. This is misleading, so let's use a
C99 integer instead.

On all architectures currently supported by PHP, `zend_uchar` and
`uint8_t` are identical. This change is only about code readability.

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Add test, fix x86 JIT

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

Add an API to observe functions and classes being linked

To observe when the functions and classes start being officially available to the user

Signed-off-by: Bob Weinand <bobwei9@h

Add an API to observe functions and classes being linked

To observe when the functions and classes start being officially available to the user

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

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Fix ZEND_RC_DEBUG build in zend_test observer tests

Fix observer test

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>

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Fix memory_leak in zend_test

Properly use globals init/shutdown to allocate the observer_observe_function_names hashtable instead of attempting to do everything in the ini changed handler

Add an API to manipulate observers at runtime

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

Release observed function name table

more fiber notifications (#7293)

Flexible fiber bailout handling (#7163)

Reorganize zend_test and add custom fiber implementation tests (#7137)