ZEND_MOD_CONFLICTS doesn't work

[petk]

Description

When building PHP extension that has ZEND_MOD_CONFLICTS listed in its dependencies, the macro is ineffective when building shared extensions or when conflicting module is registered after such extension.

For example. Suppose we add the following hypothetical change to ext/ctype/ctyp.c (to mark the ext/curl extension as conflicting for the ext/ctype):

diff --git a/ext/ctype/ctype.c b/ext/ctype/ctype.c
--- a/ext/ctype/ctype.c
+++ b/ext/ctype/ctype.c
@@ -33,9 +33,15 @@ static PHP_MINFO_FUNCTION(ctype);
 
 /* }}} */
 
+static const zend_module_dep ctype_deps[] = {
+       ZEND_MOD_CONFLICTS("curl")
+       ZEND_MOD_END
+};
+
 /* {{{ ctype_module_entry */
 zend_module_entry ctype_module_entry = {
-       STANDARD_MODULE_HEADER,
+       STANDARD_MODULE_HEADER_EX, NULL,
+       ctype_deps,
        "ctype",
        ext_functions,
        NULL,
(END)

Then building it with:

./buildconf
./configure --enable-ctype=shared --with-curl=shared
make
./sapi/cli/php -d extension_dir=modules -d extension=ctype -d extension=curl -m

Resulted in this output (here no warning is given):

[PHP Modules]
Core
ctype
curl
date
dom
fileinfo
filter
...
[Zend Modules]

But I expected this output instead:

Warning: Cannot load module "ctype" because conflicting module "curl" is already loaded in Unknown on line 0
[PHP Modules]
Core
curl
date
dom
fileinfo
filter
...
[Zend Modules]

Unlike, when doing:

./sapi/cli/php -d extension_dir=modules -d extension=curl -d extension=ctype -m

the warning is displayed and extension is not loaded as it should be done.

PHP Version

All

Operating System

No response