In the main branch, the function _tracemalloc__get_object_traceback doesn't account for objects with preheaders:
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type = Py_TYPE(obj); |
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if (PyType_IS_GC(type)) { |
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ptr = (void *)((char *)obj - sizeof(PyGC_Head)); |
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} |
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else { |
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ptr = (void *)obj; |
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} |
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|
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traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, (uintptr_t)ptr); |
This means that when running with tracemalloc some allocation tracebacks are missing:
import warnings
class MyClass:
def __del__(self):
warnings.warn("Uh oh", ResourceWarning, source=self)
def func():
m = MyClass()
func()python3 -Wd -X tracemalloc=2 example.py
cc @markshannon
Linked PRs
In the main branch, the function
_tracemalloc__get_object_tracebackdoesn't account for objects with preheaders:cpython/Modules/_tracemalloc.c
Lines 1406 to 1414 in ea23271
This means that when running with tracemalloc some allocation tracebacks are missing:
cc @markshannon
Linked PRs