gh-108634: PyInterpreterState_New() no longer calls Py_FatalError() (#108748)

pycore_create_interpreter() now returns a status, rather than
calling Py_FatalError().

* PyInterpreterState_New() now calls Py_ExitStatusException() instead
  of calling Py_FatalError() directly.
* Replace Py_FatalError() with PyStatus in init_interpreter() and
  _PyObject_InitState().
* _PyErr_SetFromPyStatus() now raises RuntimeError, instead of
  ValueError. It can now call PyErr_NoMemory(), raise MemoryError,
  if it detects _PyStatus_NO_MEMORY() error message.

1 files changed, 5 insertions, 3 deletions

diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
index ee5d498..64c74f4 100644
--- a/Python/pylifecycle.c
+++ b/Python/pylifecycle.c
@@ -629,10 +629,12 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
                           PyThreadState **tstate_p)
 {
     PyStatus status;
-    PyInterpreterState *interp = PyInterpreterState_New();
-    if (interp == NULL) {
-        return _PyStatus_ERR("can't make main interpreter");
+    PyInterpreterState *interp;
+    status = _PyInterpreterState_New(NULL, &interp);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
     }
+    assert(interp != NULL);
     assert(_Py_IsMainInterpreter(interp));
 
     status = _PyConfig_Copy(&interp->config, src_config);