The namespace data is freed and set to NULL, but there remain references
to the namespace declaration nodes. This (rightfully) confuses libxml2
because its invariants are broken. We also have to remove all remaining
references from the subtree. This fixes the data corruption bug.
Closes GH-12681.
mbfl_name2encoding() uses a linear loop through the encodings, comparing
the name one by one, which is very slow. For the benchmark [1] just
looking up the name takes about 50% of run-time.
By using perfect hashing instead, we no longer have to loop over the
list, and the number of string comparisons is reduced to just a single
one. The perfect hashing table is generated using GNU gperf and amended
manually to fit in with mbstring and manually changed to reduce the
cache size.
[1] https://github.com/php/php-src/issues/12684#issuecomment-1813799924
5.7 is EOL, 8.2 was released. Also remove mysqli from these builds as PHP-8.1
goes into security mode, after which nightly is not really actively supported
anymore.
Closes GH-12690
005_variation2.phpt creates files with special names, and
filesize_variation5.phpt checks for filesize of inexistent files with special
names. Create the files in a separate directory to avoid these tests clashing.
Closes GH-12692
In AArch64 function `zend_jit_set_veneer()`, some debug code calls two
other functions `ir_disasm_find_symbol()` and `ir_disasm_add_symbol()`
defined in `ir_disasm.c`. However, `ir_disasm.c` is compiled under the
condition that capstone is available. This causes an undefined symbol
issue while loading `opcache.so` when JIT is triggered if PHP is built
without `--with-capstone`.
We find this issue on MacOS 12.5 if we build PHP with Clang 14. It does
not appear immediately when using other versions of toolchains because
of lazy binding. To reproduce this with Linux/GCC, we can disable lazy
binding by `export LD_BIND_NOW=1` before building PHP.
This fixes the issue by making the debug code conditionally compile.
Have to use file_put_contents() instead of --FILE-- because we have to
actually load it using the exec command, *and* have to make multiple
files, and note that we can only load files relative from the current
directory, so we can't rely on files being in the sapi/phpdbg/tests
folder.
Closes GH-12680.
