Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2026-01-04 06:22:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

Use a type flag to determine the applicability of the tp_weaklistoffset

Browse source 
field.  This should avoid binary incompatibility problems with older modules
that have not been recompiled.
This commit is contained in:
Fred Drake 2001-02-02 18:17:30 +00:00
parent 26d1f14433
commit 033f31270c
2 changed files with 10 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Include/objimpl.h
View file

@ -271,7 +271,9 @@ extern DL_IMPORT(void) _PyGC_Dump(PyGC_Head *);
#endif /* WITH_CYCLE_GC */
/* Test if a type supports weak references */
#define PyType_SUPPORTS_WEAKREFS(t) ((t)->tp_weaklistoffset > 0)
#define PyType_SUPPORTS_WEAKREFS(t) \
(PyType_HasFeature((t), Py_TPFLAGS_HAVE_WEAKREFS) \
&& ((t)->tp_weaklistoffset > 0))
#define PyObject_GET_WEAKREFS_LISTPTR(o) \
((PyObject **) (((char *) (o)) + (o)->ob_type->tp_weaklistoffset))