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gh-146462: add dict introspection debug offsets #148633

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gh-146462: add dict introspection debug offsets #148633

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14 changes: 14 additions & 0 deletions Include/internal/pycore_debug_offsets.h
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Original file line number Diff line number Diff line change
Expand Up @@ -158,8 +158,16 @@ typedef struct _Py_DebugOffsets {
uint64_t tp_name;
uint64_t tp_repr;
uint64_t tp_flags;
uint64_t tp_basicsize;
uint64_t tp_dictoffset;
} type_object;

// PyHeapTypeObject offset;
struct _heap_type_object {
uint64_t size;
uint64_t ht_cached_keys;
} heap_type_object;

// PyTuple object offset;
struct _tuple_object {
uint64_t size;
Expand Down Expand Up @@ -329,6 +337,12 @@ typedef struct _Py_DebugOffsets {
.tp_name = offsetof(PyTypeObject, tp_name), \
.tp_repr = offsetof(PyTypeObject, tp_repr), \
.tp_flags = offsetof(PyTypeObject, tp_flags), \
.tp_basicsize = offsetof(PyTypeObject, tp_basicsize), \
.tp_dictoffset = offsetof(PyTypeObject, tp_dictoffset), \
}, \
.heap_type_object = { \
.size = sizeof(PyHeapTypeObject), \
.ht_cached_keys = offsetof(PyHeapTypeObject, ht_cached_keys), \
}, \
.tuple_object = { \
.size = sizeof(PyTupleObject), \
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2026-04-15-12-00-00.gh-issue-146462.1YfK6v.rst
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@@ -0,0 +1,3 @@
Added ``PyTypeObject.tp_basicsize``, ``PyTypeObject.tp_dictoffset``, and
``PyHeapTypeObject.ht_cached_keys`` offsets to :c:type:`!_Py_DebugOffsets` to
support version-independent read-only dict introspection tools.
2 changes: 1 addition & 1 deletion Modules/_remote_debugging/debug_offsets_validation.h
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Expand Up @@ -31,7 +31,7 @@
#define FIELD_SIZE(type, member) sizeof(((type *)0)->member)

enum {
PY_REMOTE_DEBUG_OFFSETS_TOTAL_SIZE = 840,
PY_REMOTE_DEBUG_OFFSETS_TOTAL_SIZE = 872,
PY_REMOTE_ASYNC_DEBUG_OFFSETS_TOTAL_SIZE = 104,
};

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