Assert ptr_ptr value of TMP|CONST isn't used (#11865)

We require valid code for compilation to succeed, but these paths should always
be guarded by OPx_TYPE checks and never execute. Add

Assert ptr_ptr value of TMP|CONST isn't used (#11865)

We require valid code for compilation to succeed, but these paths should always
be guarded by OPx_TYPE checks and never execute. Add an assertion to verify.

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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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Implement dynamic class const fetch

https://wiki.php.net/rfc/dynamic_class_constant_fetch

Closes GH-9793

Collapse more generated files in PRs (#8754)

* The generated VM files
* tokenizer_data.c

Ensure vm_spec_handlers exists for all opcodes <= 255 so that user defined higher opcodes do not read outside buffer

This largely has no effect in practice, but ASAN will complain then.

Deprecate ${} string interpolation

https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation

Handle holes in zend_get_opcode_id()

Some opcodes may currently not be allocated.

Fix clobering of operand by error handler in assignment to string offset

In some cases new code requires two reallocations insead of one.

Fixes oss-fuzz #31716, #36196, #39739 and #

Fix clobering of operand by error handler in assignment to string offset

In some cases new code requires two reallocations insead of one.

Fixes oss-fuzz #31716, #36196, #39739 and #40002

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Suppress unused label warnings in SWITCH VM

While we avoid emitting labels for handlers that are not referenced
from anywhere else, we do not perform a fine-grained analysis on
used

Suppress unused label warnings in SWITCH VM

While we avoid emitting labels for handlers that are not referenced
from anywhere else, we do not perform a fine-grained analysis on
used specializations, so some of the specialization labels may not
be used. Use ATTRIBUTE_UNUSED_LABEL to suppress the warning. Drop
"cold" from the definition of this attribute, as it is completely
unrelated.

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Drop FREE_OP_VAR_PTR() distinction

FREE_OP_VAR_PTR() is like FREE_OP(), but only frees VAR, rather
than VARs and TMPs. I don't think this distinction makes sense
anymore, as opcodes

Drop FREE_OP_VAR_PTR() distinction

FREE_OP_VAR_PTR() is like FREE_OP(), but only frees VAR, rather
than VARs and TMPs. I don't think this distinction makes sense
anymore, as opcodes using FREE_OP_VAR_PTR() generally only accept
VAR or CV. For the cases where other op types are accepted and
only freeing VAR is desired we already have FREE_OP_IF_VAR().

This drops FREE_OP_VAR_PTR(), leaving only FREE_OP() and
FREE_OP_IF_VAR().

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Remove stale variables from zend_vm_gen.php

These "unfetched" variants no longer exist.

Fix 'can not' in test data and in code comments

Fix a typo in function execute_ex (#7315)

Correct DWARF frame description.

Now GDB correctly shows backtraces that involves JIT-ed code for
functional/tracing JIT, HYBRID/CALL VM, x86/AArch64 CPU.
(opcache.jit_debug=0x100 sh

Correct DWARF frame description.

Now GDB correctly shows backtraces that involves JIT-ed code for
functional/tracing JIT, HYBRID/CALL VM, x86/AArch64 CPU.
(opcache.jit_debug=0x100 should be set).

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Disable "red zone" usage (it leads to crashes).

Use "red zone" for HYBRID VM.
Support for CALL VM and VM without global register variables.

Update zend_vm_gen.php with zend_vm_opcode.c/h changes

The generated files were modified directly, resulting in mysterious
build failures depending on exact build order.

Fix E_DEPRECATED in zend_vm_gen.php

explode(): Passing null to parameter #2 ($string) of type string is
deprecated

Closes GH-6698.

Avoid writing zend_vm_opcodes.h if it did not change

Now that we track header changes, a change to zend_vm_opcodes.h
requires rebuilding essentially the whole tree. In most cases,
ch

Avoid writing zend_vm_opcodes.h if it did not change

Now that we track header changes, a change to zend_vm_opcodes.h
requires rebuilding essentially the whole tree. In most cases,
changes to zend_vm_def.h don't actually result in any header
changes though.

Avoid touching the file by first checking whether the to be written
contents are actually the same.

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Coding style tweaks for zend_vm_gen.php

- fixed array style for $vm_kind_name and $op_types
- deleted unnecessary else statement for is_hot_helper function
- fixed concatenation styl

Coding style tweaks for zend_vm_gen.php

- fixed array style for $vm_kind_name and $op_types
- deleted unnecessary else statement for is_hot_helper function
- fixed concatenation style
- fixed style of using whitespace between "(" and switch/foreach - replaced !is_null with "!=="

Closes GH-6704.

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Disable stack reuse optimization for x86 PIC code. It may clobber local variable used for Global Offset Table.

Preallocate stack space for JIT in execute_ex() to eliminate JIT prologue/epilogue.

Provide unused retvals to observers

Make sure that the return value is available to observers, even if
it is not used by the caller.

Closes GH-6422.

[Observer] Save opline before calling begin/end handlers

Cleanup observer API and add JIT support