RFC: https://wiki.php.net/rfc/flexible_heredoc_nowdoc_syntaxes
* The ending label no longer has to be followed by a semicolon or
newline. Any non-label character is fine.
* The ending label may be indented. The indentation will be stripped
from all lines in the heredoc/nowdoc string.
Lexing of heredoc strings performs a scan-ahead to determine the
indentation of the ending label, so that the correct amount of
indentation can be removed when calculting the semantic values for
use by the parser. This makes the implementation quite a bit more
complicated than we would like :/
As described in bug report #75722, the configure script (acinclude.m4)
currently searches for the valgrind header file and enables valgrind
support if found.
When cross-compiling the searched paths are invalid for the target
platform because they belong to the host system. At the moment, there is
no way to tell the build system a dedicated path where to look for the
header file.
This leads to the issue, that when cross-compiling eg. for ARMv5 platform,
that valgrind header file is detected - e.g. because host system is amd64 -
and support is enabled - but target platform will never support valgrind
(valgrind requires e.g. at least ARMv7).
This change reworks the detection so that user could manually opt-in
valgrind support and optionally specify a directory where the build system
should look for the header file using the --with-valgrind option.
As of Oniguruma 6.8.1, the regex structure has been moved from the
public `oniguruma.h` to the private `regint.h`. Thus, it is no longer
possible to directly access the struct's members, and actually, there
is no need to, since there are respective accessor functions available
at least of 2.3.1.
We must not pass values to `gdImageScale()` which cannot be represented
by an `unsigned int`. Instead we return FALSE, according to what we
already did for negative integers.
We must not draw anti-aliased lines on palette images, because that is
not supported by `gdImageSetAAPixelColor()` and it wouldn't make much
sense to support it, due to the limitation to at most 256 colors.
Jakub Zelenka