This was only partially fixed in PHP-8.3. Backports and fixes the case for both
initialized and uninitialized property writes.
Fixes GH-14969
Closes GH-14971
* ext/standard: change `highlight_string()` return type from `string|bool` to `string|true`
* ext/standard: change `print_r` return type from `string|bool` to `string|true`
The problem is that this line in the VM: `ZVAL_NULL(result);` changes the type
of arg1 as well, because after the DFA pass the result and input both use
CV0($result).
We should not contract assignments with CVs in frameless calls with
arguments.
An older attempt is found at GH-14876 that tried to modify the VM/JIT.
Closes GH-14903.
The create_obj handler of InternalIterator is overwritten, but not the
clone_obj handler. This is not allowed.
In PHP 8.2 this didn't cause a segfault because the standard object
handler was used for the clone instead of the internal handler.
So then it allocates and frees the object using the standard object handlers.
In 8.3 however, the object is created using the standard object handler and
freed using the custom handler, resulting in the buffer overflow.
Even though bisect points to 1e1ea4f this only reveals the bug.
Closes GH-14882.
This creates a single M4 macro PHP_CHECK_BUILTIN and removes other
PHP_CHECK_BUILTIN_* macros. Checks are wrapped in AC_CACHE_CHECK and
PHP_HAVE_BUILTIN_* CPP macro definitions are defined to 1 if builtin
is found and undefined if not.
This also changes all PHP_HAVE_BUILTIN_ symbols to be either undefined
or defined (to value 1) and syncs all #if/ifdef/defined usages of them
in the php-src code. This way it is simpler to use them because they
don't need to be defined to value 0 on Windows, for example. This is
done as previous usages in php-src were mixed and on many places they
were only checked with ifdef.
This removes the unused DEBUG_CFLAGS variable from configure.ac. It has
been once set in the build files similarly to Zend.m4 but was then
removed and simplified.
CS synced and DEBUG_CFLAGS checked and appended with AS_VAR_* macros.
* Autotools: Refactor AVX-512 checks
- CS synced
- checks wrapped in AC_CACHE_CHECK
- CPP macros PHP_HAVE_AVX512_SUPPORTS and PHP_HAVE_AVX512_VBMI_SUPPORTS
are now either defined to 1 or undefined to avoid manual defining on
Windows (previously they should be either 0 or 1)
* [skip ci] Add basic macros help texts
Increase the reserved stack size in ASAN builds, as instrumentation use more stack.
Increase the max allowed stack size in some tests, and enable these tests under ASAN.
Use __builtin_frame_address(0), instead of some stack variable, when we need a stack address, as ASAN may store local variables outside of the real stack.
Fiber switching was disabled during destructor execution due to conflicts
with the garbage collector. This unfortunately introduces a function color
problem: destructors can not call functions that may switch Fibers.
In this change we update the GC so that Fiber switching during GC is safe. In
turn we allow Fiber switching during destrutor execution.
The GC executes destructors in a dedicated Fiber. If a destructor suspends, the
Fiber is owned by userland and a new dedicated Fiber is created to execute the
remaining destructors. Destructor suspension results in a resurection of the
object, which is handled as usual: The object is not considered garbage anymore,
but may be collected in a later run.
When the GC is executed in the main context (not in a Fiber), then destructors
are executed in the main context as well because there is no risk of conflicting
with GC in this case (main context can not suspend).
Fixes GH-11389
Closes GH-13460
You cannot return or yield a reference to a nullsafe chain. This was
checked already in zend_compile_return but not yet in
zend_compile_yield.
Closes GH-14716.
- PHP_CHECK_FUNC -> AC_SEARCH_LIBS
- Redundant symbols HAVE_LIBRT and HAVE_TIMER_CREATE removed
- The rt library for some older systems (Solaris <= 10, older Linux)
appended as needed
- This uses AC_ and AS_* macros and relies more on Autoconf shell
code handling
- Help texts updated and synced
- Check added into a separate M4 macro
- AC_CACHE_CHECK used for running the test program with cache variable
for optional edge-case overrides
- Help texts updated
- If check fails for some reason, the configure step emits error as
also done in the Zend C code
- Cross-compilation values updated with type casts as done in the
current conftest file output
- AC_CACHE_CHECK simplifies message checkings and can speed up the
consequtive configure -C checks
- AC_DEFINE descriptions style synced
- Used php_cv_* cache variables style
- Reduced over-quoted arguments to AC_LANG_PROGRAM
- Sync macro help text
This wraps the Zend signal handling check in its own M4 macro for
readability and uses AS_VAR_IF, AS_VAR_APPEND for CFLAGS variable,
updates help texts and fixes CS.
Values retrieved from zend_getenv should be freed.
Note: The only possible value for `zend_getenv` is `sapi_getenv` which uses
zend alloc to duplicate the string that it reads from the SAPI module.
Closes GH-14708.
This adds ZEND_CHECK_GLOBAL_REGISTER_VARIABLES M4 macro to properly
sort the --enable-gcc-global-regs in configure --help output, fixes
over-quoted arguments, syncs CS and updates help texts.
