As described in autoconf-archive upstream [1], from where
`build/ax_gcc_func_attribute.m4` is forked, the old unknown func attr
detection method would throw a false negative anytime an unrelated
warning was raised.
This results in `ax_cv_have_func_attribute_target` being set to `no`
whenever certain compiler Warning flags are switched on. Namely, having
`-Wall` on, which is a default CFLAG for some linux distributions, will
result in
```
warning: ‘bar’ declared ‘static’ but never defined [-Wunused-function]
```
when evaluating support for the `target` function attribute.
With that configuration value set to `no`, the compiled php binaries
will not support x86_64 v3 instructions such as avx2 and sse2, which
should speed up specific tasks ran by PHP.
This issue was originally reported in Ubuntu [2].
[1] http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=commitdiff;h=df0894ad1a8195df67a52108b931e07d708cec9a
[2] https://bugs.launchpad.net/ubuntu/+source/php8.1/+bug/1882279
Closes GH-8483.
When stripping the namespace prefix, we can assume that this does not
contain any colons, while the rest of the name may contain colons.
Hence we must not use `strrchr()` but rather `strchr()` instead.
Closes GH-8543.
Extensions may (and do) write to stderr in mshutdown and similar. In
the best case, with the stderr stream closed, it's just swallowed.
However, some libraries will do things like try to detect color, and
these will outright fail and cause an error path to be taken.
This issue might happen if there is change of the fcgi stream when
the buffer is full. Then the empty record is created which signals
end of stream which is incorrect.
The actual fix without a test was contributed by GitHub user @loveharmful
in GH-3198.
As of MySQL 8.0.28, `utf8mb3` charset is reported by the server, but
mysqlnd doesn't support it yet. As a stop-gap measure, we ignore that
charset for now.
Closes GH-8480.
We need to prevent integer overflow to eventually stop the iteration.
A test case doesn't appear sensible for this, because even on 32bit
architectures a respective test easily runs for a few minutes.
Closes GH-8447.
Especially for remote servers, the respective part of the test may fail
for a lot of different reasons; instead of trying to catch all, we
rewrite to not fail, still testing for the contained NUL byte.
Closes GH-8451.
The guess_timezone function does throw an error, but throwing an error doesn't
immediate make the PHP_FUNCTION return.
This check is really only necessary for distributions that patch PHP's timelib
to use system tzdata, but not correct enough to account for their
implementation to guarantee to return a timezone.
David Carlier