Fix uninitialized value watchpoint_hit

Closes GH-15317.

Fix GH-15210: phpdbg_print_changed_zvals working on a real copy instead.

Close GH-15229

Fix GH-13681: segfault when adding watchpoint fails.

thus when removing its entry, no watch point is set and crash on
pointer access.

close GH-14513

sapi/phpdbg: Update of userfaultfd workflow. (#13955)

unpriviliged_userfaultfd is set to 0 by default. Since Linux 5.11
handling memory ranges from the user-space is allowed with the

sapi/phpdbg: Update of userfaultfd workflow. (#13955)

unpriviliged_userfaultfd is set to 0 by default. Since Linux 5.11
handling memory ranges from the user-space is allowed with the
`UFFD_USER_MODE_ONLY` fd open mode flag.

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Drop zend_mm_set_custom_debug_handlers() (#13457)

Simplifies zend_mm_set_custom_debug_handlers to just use zend_mm_set_custom_handlers(), saving some conditionals when the Zend allocator is

Drop zend_mm_set_custom_debug_handlers() (#13457)

Simplifies zend_mm_set_custom_debug_handlers to just use zend_mm_set_custom_handlers(), saving some conditionals when the Zend allocator is not used.

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remove dead code and sillyness (#13322)

Use __attribute__((assume())) in ZEND_ASSUME when available

Closes GH-13171

More usage of known zend_str instead of C string (#11381)

Disable asan instrumentation for phpdbg_watchpoint_userfaultfd_thread

On gcc. It reports a false positive stack-overflow.

Closes GH-10818

Fixed compilation warnings in 32-bit build

Use more compact representation for packed arrays.

- for packed arrays we store just an array of zvals without keys.
- the elements of packed array are accessible throuf as ht->arPacked[

Use more compact representation for packed arrays.

- for packed arrays we store just an array of zvals without keys.
- the elements of packed array are accessible throuf as ht->arPacked[i]
instead of ht->arData[i]
- in addition to general ZEND_HASH_FOREACH_* macros, we introduced similar
familied for packed (ZEND_HASH_PACKED_FORECH_*) and real hashes
(ZEND_HASH_MAP_FOREACH_*)
- introduced an additional family of macros to access elements of array
(packed or real hashes) ZEND_ARRAY_ELEMET_SIZE, ZEND_ARRAY_ELEMET_EX,
ZEND_ARRAY_ELEMET, ZEND_ARRAY_NEXT_ELEMENT, ZEND_ARRAY_PREV_ELEMENT
- zend_hash_minmax() prototype was changed to compare only values

Because of smaller data set, this patch may show performance improvement
on some apps and benchmarks that use packed arrays. (~1% on PHP-Parser)

TODO:
- sapi/phpdbg needs special support for packed arrays (WATCH_ON_BUCKET).
- zend_hash_sort_ex() may require converting packed arrays to hash.

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Prefer userfaultfd over mprotect+SIGSEGV signal handling on linux for phpdbg watchpoints

Closes GH-7551.

ditch remote

Mark various functions with void arguments.

This fixes a bunch of [-Wstrict-prototypes] warning,
because in C func() and func(void) have different semantics.

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Fix spelling and grammar mistakes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at jsoref@b6ba3e2#commitcomment-48946465

Fix spelling and grammar mistakes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at jsoref@b6ba3e2#commitcomment-48946465

The action reports that the changes in this PR would make it happy: jsoref@602417c

Closes GH-6822.

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Introduce pseudo-keyword ZEND_FALLTHROUGH

And use it instead of comments

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool is retained as an alias.

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Use ZEND_UNREACHABLE() instead of ZEND_ASSERT(0)

Instead of marking unreachable code with `ZEND_ASSERT(0)`, we introduce
`ZEND_UNREACHABLE()`, so that MSVC which does not consider `asser

Use ZEND_UNREACHABLE() instead of ZEND_ASSERT(0)

Instead of marking unreachable code with `ZEND_ASSERT(0)`, we introduce
`ZEND_UNREACHABLE()`, so that MSVC which does not consider `assert(0)`
to mark unreachable code does no longer trigger C4715[1] warnings in
debug builds. This may be useful for other compilers as well.

[1] <https://docs.microsoft.com/de-de/cpp/error-messages/compiler-warnings/compiler-warning-level-1-c4715?view=vs-2019>

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Fix phpdbg watchpoints wrt. negative_array_index RFC

The implementation of that RFC changed the initial value of
`zend_array.nNextFreeElement` to `-1`; we work around that by inserting

Fix phpdbg watchpoints wrt. negative_array_index RFC

The implementation of that RFC changed the initial value of
`zend_array.nNextFreeElement` to `-1`; we work around that by inserting
first, and retrieving the index afterwards.

We also fix the erroneous printf specifier for the unsigned integer.

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Fix #73927: phpdbg fails with windows error prompt at "watch array"

We expect zvals, so we should request zvals.

We also suppress spurious watchpoint removal notices.

Fix several mostly Windows related phpdbg bugs

* Properly initialize PHPDBG_G(watch_tmp)

Otherwise that may cause segfaults in ZTS builds.

* Deactivate potentially remain

Fix several mostly Windows related phpdbg bugs

* Properly initialize PHPDBG_G(watch_tmp)

Otherwise that may cause segfaults in ZTS builds.

* Deactivate potentially remaining watchpoints after REPL

Otherwise the memory could still be protected, resulting in segfaults
during shutdown.

* NULL zend_handlers_table after freeing

As of commit 4130fe4[1], the `zend_handlers_table` is explicitly
freed in the `zend_vm_dtor()`. Since phpdbg (and maybe some other
SAPIs) may restart the engine afterwards, we have to make sure that
the table is also NULLed.

* Only set context option if there is a context

In other words, we must not follow the null pointer.

* Cater to file handles without attached console

File handles do not necessarily have an attached console (for
instance, pipes do not), in which case `GetConsoleScreenBufferInfo()`
fails. In this case we set a default value (`40`) for lines like on
other systems.

[1] <http://git.php.net/?p=php-src.git;a=commit;h=4130fe437a5db7ead1444d3748bd0fbad9829cb2>

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Fix [-Wundef] warning in PHPDBG SAPI

Fix #78880: Another bunch of spelling errors

Remove mention of PHP major version in Copyright headers

Closes GH-4732.