* FE_RESET_VARIABLE and FE_RESET_REFERENCE were always set
together.
* In some places the code checked FE_FETCH_BYREF instead of
FE_RESET_REFERENCE and relied on them having the same value.
* Now the FE_RESET_* flags are dropped and everything uses
FE_FETCH_BYREF
This moves handling of inheritance and interface implementation
from zend_compile.c into a separate zend_inheritance.c file, as
this is not really related to compilation.
* PHP-5.6:
update NEWS
Only destruct if EG(active) in zend_shutdown(). (bug #65463, #66036)
Fix typo from commit 32314f6b6
Fix destruction order in zend_shutdown (bug #65463, #66036)
Conflicts:
Zend/zend_compile.h
Zend/zend_execute_API.c
* PHP-5.5:
update NEWS
Only destruct if EG(active) in zend_shutdown(). (bug #65463, #66036)
Fix typo from commit 32314f6b6
Fix destruction order in zend_shutdown (bug #65463, #66036)
* PHP-5.4:
update NEWS
Only destruct if EG(active) in zend_shutdown(). (bug #65463, #66036)
Fix typo from commit 32314f6b6
Fix destruction order in zend_shutdown (bug #65463, #66036)
* pull-request/770:
Only destruct if EG(active) in zend_shutdown(). (bug #65463, #66036)
Fix typo from commit 32314f6b6
Fix destruction order in zend_shutdown (bug #65463, #66036)
Now one common stack to handle both, which stores znodes instead of
full oplines (foreach copy stack) or switch entries (switch cond
stack).
Also removed EG(start_op) while at it.
This removes the need to use $<ast>{n} or $<list>$ casts in the
reduction actions.
Keeping the distinction in the parser doesn't really give us any
benefit and only makes changing the grammar harder.
As far as I can discern these are leftovers of the interactive
shell implementation that was used before PHP 5.4. Now the readline
ext makes use of normal eval calls for this.
So, dropping these until there is evidence to the contrary, as they
currently wouldn't work anyway.
If Apache or a similar SAPI receives a signal during PHP processing
it calls zend_shutdown() without calling shutdown_executor().
#65463: If a module like Gearman or Memcached is loaded,
in the unfixed version it is unloaded by zend_destroy_modules() before the
CG(CLASS_TABLE) is destructed. When CG(CLASS_TABLE) is destructed,
any pointers to methods (specifically around destruction) in the unloaded
module's .so are now dangling and the process segfaults.
#66036: Any subclasses of an internal class like ArrayObject need
to be destructed in order: subclass first and then the internal class. In the
unfixed version zend_shutdown() clears the CG(CLASS_TABLE) from the head
of the list onwards, so internal classes are destructed first and user-defined
classes last. Internal classes are alloc/deallocated with malloc/free while
user-defined classes with emalloc/efree. If there's shared data between them
then efree() could be called instead of free() leading to a seg-fault.
* master:
fix nmake snap when ext name is different in target dll
force atoll macro usage on windows
Enable $ replacement in exif, ldap, pdo_pgsql and tidy
See bug #67635
NEWS
NEWS
improve previous, add message during configure
Fixed bug #67635 php links to systemd libraries without using pkg-config
Improve fix for #66608
Fixed segfault with empty break
New added opcodes don't need to be resloved
Update NEWS
Update NEWS
Update NEWS
Fixed bug #66827 Session raises E_NOTICE when session name variable is array
implemented copy libs of core exts in phpize mode
fix copy the ext dll into the prefix path in phpize mode
fix default prefix in phpize mode
fix file with zero size usage in phpize mode
Conflicts:
Zend/zend_opcode.c
Zend/zend_vm_def.h
Zend/zend_vm_execute.h
ext/session/session.c
* call-frame:
Simplify call-frame handling
Removed EG(active_symbol_table) and use corresponding value from EG(current_execute_data)
Use values from current_execute_data instead of globals where possible
Removed EG(called_scope) and use corresponding value from EG(current_execute_data)
Removed EG(in_execution). If EG(currentent_execute_data) is not NULL we are executing something.
Removed EG(opline_ptr) and use corresponding value from EG(current_execute_data)
Removed EG(active_op_array) and use corresponding value from EG(current_execute_data)
Uinified call frame handling for user and internal functions. Now EG(current_execute_data) always point to the call frame of the currently executed function.
Fixed cleanup of incompleytely passed parameters
Prohibited parameter redefinition
Fixed support for extra arguments in conjunction with variadiv argument. Use compile time flags to check if we call constructor and result of ZEND_NEW is used or not.
Fixed uninitialized variables
Optimization
Changed zend_execute_data layout to reduce memory overhead
Help C compilet to do the better job optimizing target code
Use fast comparison for (func->type == ZEND_USER_FUNCTION || func->type == ZEND_EVAL_CODE)
Keep extra args in the same VM stack segment (after all CV and TMP vars)
Refactoring: merge call_frame and end_execute_data into single data structure. Keep only single copy of each argument on VM stack (previously ZE kept two copies of each arguments for user functions)
Refactoring: use call_frames instead of call_slots
Conflicts:
Zend/zend_vm_def.h
Zend/zend_vm_execute.h
In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode that pushes "call frame" on top of VM stack.
"Call frame" is actually the same zend_execute_data structure.
All the following ZEND_SEND instructions push arguments on top of the stack in a way that they directly comes into corresponding CV variables of the called frame. Extra arguments are copied at the end of stack frame (after all CV and TMP variables) on function enterance.
There are two minor incompatibilities:
1) It's not allowed to decalre functions redefining arguments e.g. "function foo($a,$a) {}".
2) func_get_arg() and func_get args() return the current value of argument and not the original value that was sent.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal now accept pointer to zval or cache_slot directly.
Calls of such functiond that now accept cache_slot need to be changed to pass -1 instead of NULL.
This commit disallows the use of trailing positional arguments
after argument unpacking was used. The following calls are no
longer valid:
fn(...$array, $var);
fn(...$array1, $var, ...$array2);
However, all of the following continue to be valid:
fn($var, ...$array);
fn(...$array1, ...$array2);
fn($var, ...$array1, ...$array2);
The reason behind this change is a stack allocation issue pointed
out by Dmitry: As of PHP 5.5 the stack necessary for pushing
arguments is precomputed and preallocated, as such the individual
SEND opcodes no longer verify that there is enough stack space.
The unpacked arguments will occupy some of that preallocated
space and as such following positional arguments could write past
a stack page boundary.
An alternative resolution for this issue is to ensure that there
is enough space for the remaining arguments in the UNPACK opcode.
However making this allocation precise (rather than using a
conversative over-estimate) would require some effort. Given that
this particular aspect of the feature wasn't very popular in the
first place, it doesn't seem worth the effort.
Instead of storing the argument number in the znode of the parameter
list, store it in fcall->arg_num. This mainly cleans up the parameter
parsing code, which previously had to duplicate all rules (this
becomes more excessive as more features are added, e.g. named params
would already require a minimum of 14 rules...)
Instead of directly pushing the zend_function* onto the
function_call_stack, push this structure. This allows us to store
additional data on this stack.
* upstream/PHP-5.6: (399 commits)
Fixed issue #115 (path issue when using phar). Fixed issue #149 (Phar mount points not working with OPcache enabled).
Added tests for PHAR/OPCahce incompatibilities
Update NEWS
Fixed bug #65947 (basename is no more working after fgetcsv in certain situation)
Update NEWS
Fixed Bug #66043 (Segfault calling bind_param() on mysqli)
NEWS entry
NEWS entry
Fix bug #65946 - pdo_sql_parser.c permanently converts values bound to strings
bump API versions
Add a couple more test cases to parse_url() tests
fix missing change from 'tcp_socket' to the more common 'server'
fix many parallel test issues
Cleanup temp test file
Revert "Fixed issue #115 (path issue when using phar)."
Update LiteSpeed SAPI code to V6.4
Fixed typo in Makefile.frag
updated NEWS
Remove outdate codes, make it clearer, although just a bit..
Update NEWS
...
Conflicts:
Zend/zend_compile.h
* The fetch_type and check_ns_name parameters of
zend_resolve_class_name were unused and are now removed.
* ZEND_FETCH_CLASS_GLOBAL is no longer used (no code actually
checking for it).
* The checks for usage of "namespace" as class name were
unnecessary as that situation can't occur anyways.
* generators: (70 commits)
Fix typos
Fix segfault when traversing a by-ref generator twice
Make sure that exception is thrown on rewind() after closing too
Remove implementation stubs for yield delegation
Fix several issues and allow rewind only at/before first yield
Run finally if generator is closed before finishing
Finally with return now works in generators too
Add dedicated opcode for returns from a generator
Disallow serialization and unserialization
Fix zts build (typo)
Drop Generator::close() method
Forgot to add test
Support trivial finally in generators (no yield, no return)
Fix implementation of Iterator interface
Add T_YIELD in tokenizer_data.c
Throw error also for return occuring before yield
Fix throwing of exceptions within a generator
Remove reference restrictions from foreach
Require parenthesis around yield expressions
Add some more tests
...
This is just an intial merge. It does not yet make generators and finally
work together.
Conflicts:
Zend/zend_language_scanner.c
Zend/zend_language_scanner_defs.h
Zend/zend_vm_def.h
Zend/zend_vm_execute.h
Zend/zend_vm_execute.skl
Zend/zend_vm_opcodes.h
If yield is used in an expression context parenthesis are now required.
This ensures that the code is unambiguos.
Yield statements can still be used without parenthesis (which should be
the most common case).
Also yield expressions without value can be used without parenthesis,
too (this should be the most common case for coroutines).
If the yield expression is used in a context where parenthesis are required
anyway, no additional parenthesis have to be inserted.
Examples:
// Statements don't need parenthesis
yield $foo;
yield $foo => $bar;
// Yield without value doesn't need parenthesis either
$data = yield;
// Parentheses don't have to be duplicated
foo(yield $bar);
if (yield $bar) { ... }
// But we have to use parentheses here
$foo = (yield $bar);
This commit also fixes an issue with by-ref passing of $foo[0] like
variables. They previously weren't properly fetched for write.
Additionally this fixes valgrind warnings which were caused by access to
uninitialized memory in zend_is_function_or_method_call().
Generators are now automatically detected by the presence of a `yield`
expression in their body.
This removes the ZEND_SUSPEND_AND_RETURN_GENERATOR opcode. Instead
additional checks for ZEND_ACC_GENERATOR are added to the fcall_common
helper and zend_call_function.
This also adds a new function zend_generator_create_zval, which handles
the actual creation of the generator zval from an op array.
I feel like I should deglobalize the zend_create_execute_data_from_op_array
code a bit. It currently changes EG(current_execute_data) and
EG(opline_ptr) which is somewhat confusing (given the name).
Keys are yielded using the
yield $key => $value
syntax. Currently this is implemented as a statement only and not as an
expression, because conflicts arise considering nesting and use in arrays:
yield yield $a => $b;
// could be either
yield (yield $a) => $b;
// or
yield (yield $a => $b);
Once I find some way to resolve these conflicts this should be available
as an expression too.
Also the key yielding code is rather copy-and-past-y for the value yielding
code, so that should be factored out.
