Turn add_index_zval and add_next_index_zval into inline function

Avoids expression warnings and allows explicitly namespaced use in
C++.

Closes GH-4250.

Constify some char* arguments or return values of ZEND_API

Closes GH-4247.

Add do...while(0) for RETURN_* and ZVAL_* APIs

Closes GH-4255.

Merge branch 'PHP-7.4'

Allow exceptions in __toString()

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

And convert some object to string conversion related recoverable
fatal errors into Error excep

Allow exceptions in __toString()

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

And convert some object to string conversion related recoverable
fatal errors into Error exceptions.

Improve exception safety of internal code performing string
conversions.

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Add Z_PARAM_NUMBER and use it for some functions

Remove zpp L specifier

We don't use this internally anymore, and external usages should
be encouraged to move towards 'l'.

Merge branch 'PHP-7.4'

* PHP-7.4:
Better hot/cold code splitting

Better hot/cold code splitting

Merge branch 'PHP-7.4'

* PHP-7.4:
Mark "cold" functions

Mark "cold" functions

Merge branch 'PHP-7.4'

* PHP-7.4:
Fix conditional compilation
These macros should not expect any argument

These macros should not expect any argument

Merge branch 'PHP-7.4'

* PHP-7.4:
Put phpinfo() related code into cold code segment

Put phpinfo() related code into cold code segment

Merge branch 'PHP-7.4'

Add RETURN_EMPTY_ARRAY() / RETVAL_EMPTY_ARRAY()

The usual wrappers around ZVAL_EMPTY_ARRAY()...

Merge branch 'PHP-7.4'

Fix typo in TRY_ASSIGN macro name

Use ZEND_TRY_ASSIGN_REF_... macros for arguments passed to internal function by reference

Use ZEND_TRY_ASSIGN_REF_... macros for arguments passed to internal function by reference

Use ZEND_TRA_ASSIGN_REF_... macros for by reference arguments of internal functions.

Merge branch 'PHP-7.4'

Fixed bug #74345

Export zend_release_fcall_info_cache(). It is only necessary to
call it if the fcc may not have been used -- if it is passed to
zend_call_function() and friends, the

Fixed bug #74345

Export zend_release_fcall_info_cache(). It is only necessary to
call it if the fcc may not have been used -- if it is passed to
zend_call_function() and friends, then they will take care of
freeing trampolines.

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Make zpp failures always throw, independent of strict_types

Previously zend_parse_parameters (and FastZPP) would handle invalid
arguments depending on strict_types: With strict_types=1,

Make zpp failures always throw, independent of strict_types

Previously zend_parse_parameters (and FastZPP) would handle invalid
arguments depending on strict_types: With strict_types=1, a TypeError
is thrown, with strict_types=0 a warning is thrown and (usually) NULL
is returned. Additionally, some functions (constructors always and
other methods sometimes) opt-it to throwing regardless of strict_types.

This commit changes zpp to always generate a TypeError exception in
PHP 8.

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