AIX build fails with the main branch

[ayappanec]

Python main branch fails to build in AIX operating system with the below error.

gcc -pthread -c -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall    -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal  -I. -I./Include    -DPy_BUILD_CORE -o Objects/typeobject.o Objects/typeobject.c
In file included from ./Include/internal/pycore_runtime.h:13,
                 from ./Include/internal/pycore_pystate.h:11,
                 from ./Include/internal/pycore_call.h:11,
                 from Objects/typeobject.c:4:
./Include/internal/pycore_global_strings.h:674:41: error: 'struct `<anonymous>`' has no member named '__Bool'; did you mean '_hook'?
      (_Py_SINGLETON(strings.identifiers._ ## NAME._ascii.ob_base))
                                                                             ^
./Include/internal/pycore_global_objects.h:24:31: note: in definition of macro '_Py_GLOBAL_OBJECT'
     _PyRuntime.global_objects.NAME
                                                    ^~~~
./Include/internal/pycore_global_strings.h:674:7: note: in expansion of macro '_Py_SINGLETON'
      (_Py_SINGLETON(strings.identifiers._ ## NAME._ascii.ob_base))
       ^~~~~~~~~~~~~
Objects/typeobject.c:8569:38: note: in expansion of macro '_Py_ID'
      PyDoc_STR(DOC), .name_strobj = &_Py_ID(NAME) }
                                                                    ^~~~~~
Objects/typeobject.c:8579:5: note: in expansion of macro 'ETSLOT'
     ETSLOT(NAME, as_number.SLOT, FUNCTION, WRAPPER, \
     ^~~~~~
Objects/typeobject.c:8686:5: note: in expansion of macro 'UNSLOT'
     UNSLOT(__bool__, nb_bool, slot_nb_bool, wrap_inquirypred,
     ^~~~~~
gmake: *** [Makefile:2525: Objects/typeobject.o] Error 1

Linked PRs

• gh-98705: Fix AIX build  #98768

[ayappanec]

https://buildbot.python.org/all/#/builders/438/builds/3744

[ayappanec]

This is what I can see in the preprocessed file

(void *)(slot_nb_bool), wrap_inquirypred, "__bool__" "($self, /)\n--\n\n" "True if self else False", .name_strobj = &(_PyRuntime.global_objects.singletons.strings.identifiers.__Bool._ascii.ob_base) }

[ayappanec]

In AIX, the standards.h file has __bool__ redefined to "_Bool" which seems to create the problem here.

[ayappanec]

Probably a #undef __bool__ is required in pyport.h

[ayappanec]

Thanks @gpshead