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f2379535fe
After gh-130704, the interpreter replaces some uses of `LOAD_FAST` with `LOAD_FAST_BORROW` which avoid incref/decrefs by "borrowing" references on the interpreter stack when the bytecode compiler can determine that it's safe. This change broke some checks in C API extensions that relied on `Py_REFCNT()` of `1` to determine if it's safe to modify an object in-place. Objects may have a reference count of one, but still be referenced further up the interpreter stack due to borrowing of references. This provides a replacement function for those checks. `PyUnstable_Object_IsUniqueReferencedTemporary` is more conservative: it checks that the object has a reference count of one and that it exists as a unique strong reference in the interpreter's stack of temporary variables in the top most frame. See also: * https://github.com/numpy/numpy/issues/28681 Co-authored-by: Pieter Eendebak <pieter.eendebak@gmail.com> Co-authored-by: T. Wouters <thomas@python.org> Co-authored-by: mpage <mpage@cs.stanford.edu> Co-authored-by: Mark Shannon <mark@hotpy.org> Co-authored-by: Victor Stinner <vstinner@python.org> |
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| .. | ||
| abstract.rst | ||
| allocation.rst | ||
| apiabiversion.rst | ||
| arg.rst | ||
| bool.rst | ||
| buffer.rst | ||
| bytearray.rst | ||
| bytes.rst | ||
| call.rst | ||
| capsule.rst | ||
| cell.rst | ||
| code.rst | ||
| codec.rst | ||
| complex.rst | ||
| concrete.rst | ||
| contextvars.rst | ||
| conversion.rst | ||
| coro.rst | ||
| datetime.rst | ||
| descriptor.rst | ||
| dict.rst | ||
| exceptions.rst | ||
| file.rst | ||
| float.rst | ||
| frame.rst | ||
| function.rst | ||
| gcsupport.rst | ||
| gen.rst | ||
| hash.rst | ||
| import.rst | ||
| index.rst | ||
| init.rst | ||
| init_config.rst | ||
| intro.rst | ||
| iter.rst | ||
| iterator.rst | ||
| list.rst | ||
| long.rst | ||
| mapping.rst | ||
| marshal.rst | ||
| memory.rst | ||
| memoryview.rst | ||
| method.rst | ||
| module.rst | ||
| monitoring.rst | ||
| none.rst | ||
| number.rst | ||
| object.rst | ||
| objimpl.rst | ||
| perfmaps.rst | ||
| refcounting.rst | ||
| reflection.rst | ||
| sequence.rst | ||
| set.rst | ||
| slice.rst | ||
| stable.rst | ||
| structures.rst | ||
| sys.rst | ||
| time.rst | ||
| tuple.rst | ||
| type.rst | ||
| typehints.rst | ||
| typeobj.rst | ||
| unicode.rst | ||
| utilities.rst | ||
| veryhigh.rst | ||
| weakref.rst | ||