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GH-93516: Store offset of first traceable instruction in code object #93769

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Merged
markshannon merged 4 commits into from
Jun 14, 2022
Merged

GH-93516: Store offset of first traceable instruction in code object #93769

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cc44d3b
Store offset of first traceable instruction to avoid having to recomp…
markshannon Jun 13, 2022
4af267e
Hardcode RESUME opcode in deepfreeze, to break dependency on exact ve…
markshannon Jun 13, 2022
ea8bea2
Handle empty code objects, and other invalid code, gracefully.
markshannon Jun 13, 2022
a3ad259
Check bounds before data
markshannon Jun 14, 2022
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Handle empty code objects, and other invalid code, gracefully.
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@markshannon
markshannon committed Jun 13, 2022
commit ea8bea24bf8699767c0736b029a8ee303060f9dc
3 changes: 2 additions & 1 deletion Objects/codeobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -340,7 +340,8 @@ init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
memcpy(_PyCode_CODE(co), PyBytes_AS_STRING(con->code),
PyBytes_GET_SIZE(con->code));
int entry_point = 0;
while (_Py_OPCODE(_PyCode_CODE(co)[entry_point]) != RESUME) {
while (_Py_OPCODE(_PyCode_CODE(co)[entry_point]) != RESUME &&
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entry_point < Py_SIZE(co)) {
entry_point++;
}
co->_co_firsttraceable = entry_point;
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