* tree-wide: Replace `CHECK_NULL_PATH()` by `zend_char_has_nul_byte()`
The former is a direct alias of the latter with a more explicit name and the
former is explicitly documented as a “compatibility” alias.
* tree-wide: Replace `CHECK_ZVAL_NULL_PATH()` by its definition
The former is explicitly documented as a “compatibility” alias.
* zend_API: Remove `CHECK*NULL_PATH`
The `CHECK_ZVAL_NULL_PATH()` macro is unsafe, because it implicitly assumes
that the given `zval*` is `IS_STRING`.
Based on a GitHub search there does not seem to be any user outside of PHP, all
hits were just forks / copies of php-src.
- When building with bundled libgd, it has support for BMP
- When building with external libgd, at least 2.1.0 is required, which
has BMP support.
- The HAVE_GD_PNG moved to PHP_GD_PNG Autoconf macro as it is always
required when building with bundled libgd.
```
ext/gd/libgd/gd.c:2275:14: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
#0 0x5d6a2103e1db in php_gd_gdImageCopy /home/dcarlier/Contribs/php-src/ext/gd/libgd/gd.c:2275
#1 0x5d6a210a2b63 in gdImageCrop /home/dcarlier/Contribs/php-src/ext/gd/libgd/gd_crop.c:57
#2 0x5d6a21018ca4 in zif_imagecrop /home/dcarlier/Contribs/php-src/ext/gd/gd.c:3575
#3 0x5d6a21e46e7a in ZEND_DO_ICALL_SPEC_RETVAL_USED_HANDLER /home/dcarlier/Contribs/php-src/Zend/zend_vm_execute.h:1337
#4 0x5d6a221188da in execute_ex /home/dcarlier/Contribs/php-src/Zend/zend_vm_execute.h:57246
#5 0x5d6a221366bd in zend_execute /home/dcarlier/Contribs/php-src/Zend/zend_vm_execute.h:61634
#6 0x5d6a21d107a6 in zend_execute_scripts /home/dcarlier/Contribs/php-src/Zend/zend.c:1895
#7 0x5d6a21a63409 in php_execute_script /home/dcarlier/Contribs/php-src/main/main.c:2529
#8 0x5d6a22516d5e in do_cli /home/dcarlier/Contribs/php-src/sapi/cli/php_cli.c:966
#9 0x5d6a2251981d in main /home/dcarlier/Contribs/php-src/sapi/cli/php_cli.c:1341
#10 0x7f10d002a3b7 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
#11 0x7f10d002a47a in __libc_start_main_impl ../csu/libc-start.c:360
#12 0x5d6a20a06da4 in _start (/home/dcarlier/Contribs/php-src/sapi/cli/php+0x2806da4) (BuildId: d9a79c7e0e4872311439d7313cb3a81fe04190a2)
```
close GH-18006
