NEWS entry, test and minor cleanup for FFI::isNull()

add FFI::isNull() to check whether a FFI\CData is a null pointer

Stop after exceptions

Fixed bug #78488 (OOB in ZEND_FUNCTION(ffi_trampoline)).

Fixed bug #78488 (OOB in ZEND_FUNCTION(ffi_trampoline)).

Add ext/ffi stubs

Support calling convention specific function name mangling

On Windows certain calling conventions cause C function names to be
mangled, so to import them we have to use the properly mang

Support calling convention specific function name mangling

On Windows certain calling conventions cause C function names to be
mangled, so to import them we have to use the properly mangled names.

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Fix typos in FFI

Closes GH-4438

FFI: Perform bitfield operations byte-wise

Otherwise we may perform reads/writes outside the allocation, as
already happens in 032.phpt.

FFI: Use signed arithmetic for pointer offset

offset can be negative here, using signed arithmetic avoids ubsan
warnings.

Avoid uninitilized field access

Fixed memory leaks in ext/ffi/tests/100.phpt on Mac OSX

Remove get() object handler

Now that set() is gone, there is little point in keeping get(), as
it is essentially just a different way of writing cast_object()
now.

Closes GH

Remove get() object handler

Now that set() is gone, there is little point in keeping get(), as
it is essentially just a different way of writing cast_object()
now.

Closes GH-4202.

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Replace ZVAL_COPY() and ZVAL_COPY_VALUE() for IS_OBJECT by cheaper macros

Avoid usage of internal get/set object handlers. They are going to be removed in PHP-8.
Scalar FFI values now should be accessed through special "cdata" property.

$x = FFI::new("int"

Avoid usage of internal get/set object handlers. They are going to be removed in PHP-8.
Scalar FFI values now should be accessed through special "cdata" property.

$x = FFI::new("int");
$x = 42;

should be changed into

$x = FFI::new("int");
$x->cdata = 42;

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Check for supported libffi ABI

Avoid some maybe uninitialized warnings in ffi

All false positives.

Fix double incremenation in ffi

This removes the warning of:
`incremented both in the loop header and in the loop body` in the
compilation step.

Properly initialize variable

Not all code paths assign to `handle`, even though it may be used, so
we make sure that it is initialized to a sane value in the first place.

Fix typo

Fixed ext/ffi/tests/044.phpt failure on 32-bit Linux

Fix handling and extend ext/ffi/tests/044.phpt

Partial support for GCC mode attribute.

Fixed memory leaks

Allow usage of incomplete types for external variables, function parameters and return values