gh-126881: fix finalization of dtoa state (#126904)

Author: kumaraditya303

Misc/NEWS.d/next/Core_and_Builtins/2024-11-16-11-11-35.gh-issue-126881.ijofLZ.rst

@@ -0,0 +1 @@
+Fix crash in finalization of dtoa state. Patch by Kumar Aditya.

Python/pylifecycle.c

@@ -1888,7 +1888,6 @@ finalize_interp_clear(PyThreadState *tstate)
     _PyXI_Fini(tstate->interp);
     _PyExc_ClearExceptionGroupType(tstate->interp);
     _Py_clear_generic_types(tstate->interp);
-    _PyDtoa_Fini(tstate->interp);
 
     /* Clear interpreter state and all thread states */
     _PyInterpreterState_Clear(tstate);
@@ -1910,6 +1909,9 @@ finalize_interp_clear(PyThreadState *tstate)
 
     finalize_interp_types(tstate->interp);
 
+    /* Finalize dtoa at last so that finalizers calling repr of float doesn't crash */
+    _PyDtoa_Fini(tstate->interp);
+
     /* Free any delayed free requests immediately */
     _PyMem_FiniDelayed(tstate->interp);