The properties HT may be a GC root itself, so we need to remove it.
I'm not sure this issue actually applies to PHP 7.2, but committing
it there to be safe. As seen from the test case, the handling here
is rather buggy on 7.2.
Due to overflows in the memory limit checks, we were missing cases
where the allocation size was close to the address space size, and
caused an OOM condition rather than a memory limit error.
As of Windows 1903, when the OneDrive on-demand feature is enabled, the
OneDrive folder is reported as reparse point by `FindFirstFile()`, but
trying to get information about the reparse point using
`DeviceIoControl()` fails with `ERROR_NOT_A_REPARSE_POINT`. We work
around this problem by falling back to `GetFileInformationByHandle()`
if that happens, but only if the reparse point is reported as cloud
reparse point, and only if PHP is running on Windows 1903 or later.
The patch has been developed in collaboration with ab@php.net.
We should keep an eye on the somewhat quirky OneDrive behavior, since
it might change again in a future Windows release.
This is likely going to end up interned lateron at some point
when the new_name is referenced somewhere. However, it may be
that there are some uses that do not get interned before that.
In this case we will intern a string that already have zval
users, without updating the refcounted flag on those zvals.
In particular this can happen with something like [Foo::class],
where Foo is an imported symbol. The string it resolves to won't
get interned right away, but may be interned later.
use Foo as Bar;
$x = [Bar::class];
var_dump(Bar::X);
debug_zval_dump($x); // Will show negative refcount
class Foo {
const X = 1;
}
However, this doesn't really fix the root cause, there are probably
other situations where something similar can occur.
There are a few parts here:
* opcache should not be blocking signals while invoking compile_file,
otherwise signals may remain blocked on a compile error. While at
it, also protect SHM memory during compile_file.
* We should deactivate Zend signals at the end of the request, to make
sure that we gracefully recover from a missing unblock and signals
don't remain blocked forever.
* We don't use a critical section in deactivation, because it should
not be necessary. Additionally we want to clean up the signal queue,
if it is non-empty.
* Enable SIGG(check) in debug builds so we notice issues in the future.
If we perform a class fetch that is not marked as exception safe,
convert exceptions thrown by autoloaders into a fatal error.
Ideally fetching the interfaces would be exception safe, but as it
isn't right now, we must abort at this point.
If a PHP file contains an invalid hex literal such as `0x_10`, the expected error
is `Parse error: syntax error, unexpected 'x_10' (T_STRING) in %s on line %d`.
This already worked correctly on Linux, but on Windows prior to this patch a different
error was produced: `Parse error: Invalid numeric literal in %s on line %d`.
When a connection is closed, we also need to remove the hash entry
from the regular_list, as it now points to freed memory. To do this
store a reverse mapping from the connection to the hash string.
It would be nicer to introduce a wrapping structure for the pgsql
link resource that could store the hash (and notices), but that would
require large changes to the extension, so I'm going for a more
minimal fix here.
We only need to do this once we're running destructors. The current
approach interferes with some event loop code that runs everything
inside a shutdown function.
There have been multiple reports of large slowdowns due to the
use of MADV_HUGEPAGE, so make it conditional on
USE_ZEND_ALLOC_HUGE_PAGES, just like MAP_HUGETLB already is.
This reverts commit 6305119a51.
This is a source-compatibility break for extensions that define
custom FastZPP macros, such as ext/uv:
a983eb17b6/php_uv.c (L75)
I don't think that FastZPP was intended to be used this way, but
let's revert this from release branches to avoid extension breakage.
This is useful for coverage. While it is currently safe to just
skip over the SWITCH_* opcodes, this may not be true in the future
due to opcache optimizations, so it's safer to disable emission of
SWITCH_* opcodes entirely.
Previously this triggered an assertion failure. The behavior is
not quite correct, in that self::class should generate an exception
if there is no self, but returns an empty string here. Fixing that
would be a bit too intrusive for the 7.2 branch.
This does not print the exact line of the comma, but rather the line
of the previous element. This should generally be "good enough", as
the line number is close (off by one) to the actual issue now.
Previously it would point to the start of the array, which may be
very far away.
