If there is a previous use of the new variable in the phi, we need
to NULL out the use chain of the new source we're adding.
Test case is reduced from an assertion failure in the Symfony Demo.
This cherry-picks 33969c2252 and
2effbfd871 from PHP-8.0.
The issues these commits fix could also manifest in PHP 7.4, and
a commenter on bug #80307 reports this this might indeed be
happening.
If a trait method is inherited, preloading trait fixup might be
performed on it multiple times. Usually this is fine, because
the opcodes pointer will have already been updated, and will thus
not be found in the xlat table.
However, it can happen that the new opcodes pointer is the same
as one of the old opcodes pointers, if the pointer has been reused
by the allocator. In this case we will look up the wrong op array
and overwrite the trait method with an unrelated trait method.
We fix this by indexing the xlat table not by the opcodes pointer,
but by the refcount pointer. The refcount pointer is not changed
during optimization, and accurately represents which op arrays
should use the same opcodes.
Fixes bug #80307. The test case does not reproduce the bug, because
this depends on a lot of "luck" with the allocator. The test case
merely illustrates a case where orig_op_array would have been NULL
in the original code.
We should use normal function renaming if the function is declared
during preloading itself, rather than afterwards.
This fixes a regression introduced by
68f80be9d1.
We should only disable early binding during the opcache_compile_file()
calls, not inside the preloading script or anything it includes.
The right condition to check for is whether we compile the file
without execution, as declaring classes is "execution".
This is a bit annoying: When preloading is used, types might be
resolved during inheritance checks, so we need to deal with CE
types rather than just NAME types everywhere.
When preloading, it's fine to make use of internal class information,
as we do not support Windows. It is also necessary to allow proper
variance checks against internal classes.
This testing mode executes the test multiple times in the same
process (but in different requests). It is primarily intended to
catch tracing JIT bugs, but also catches state leaks across
requests.
Closes GH-6365.
We missed the change to make this an Error exception in PHP 8,
but at least elevate it to a warning, to avoid a notice -> exception
jump at a later time.
RFC: https://wiki.php.net/rfc/saner-numeric-strings
This removes the -1 allow_error mode from is_numeric_string functions and replaces it by
a trailing boolean out argument to preserve BC in a couple of places.
Most of the changes can be resumed to "numeric" strings which emitted a E_NOTICE now emit
a E_WARNING and "numeric" strings which emitted a E_WARNING now throw a TypeError.
This mostly affects:
- String offsets
- Arithmetic operations
- Bitwise operations
Closes GH-5762
* mysqli_get_server_info() cannot return null. The underlying API
is infallible.
* mysqli_select_db() func info is redundant.
* mb_detect_order() can only return array|true, not array|false.
Also make the func_info.phpt test that is supposed to catch these
kinds of issues actually work.
