Merge pull request #15 from encukou/pep757-sapi/143869

#143906 fixup

Author: skirpichev

Misc/stable_abi.toml

@@ -41,6 +41,8 @@
 #   - 'full-abi': All of the struct is part of the ABI, including the size
 #     (users may define arrays of these structs).
 #     Typically used for initialization, rather than at runtime.
+#     Any members whose names start with an underscore are not part of the
+#     limited API; they're for CPython's use only.
 #   - 'opaque': No members are part of the ABI, nor is the size. The Limited
 #     API only handles these via pointers. The C definition should be
 #     incomplete (opaque).
@@ -2687,5 +2689,6 @@
     struct_abi_kind = 'full-abi'
 [struct.PyLongExport]
     added = '3.15'
-    struct_abi_kind = 'members'
-    members = ['value', 'negative', 'ndigits', 'digits']
+    # Note: The `_reserved` member of this struct is for interal use only.
+    # (The definition of 'full-abi' was clarified when this entry was added.)
+    struct_abi_kind = 'full-abi'