gh-135177: Add assert to catch potential overflow #135179
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vstinner
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Jun 5, 2025
| event == PY_MONITORING_EVENT_BRANCH_RIGHT || | ||
| event == PY_MONITORING_EVENT_BRANCH_LEFT); | ||
| int to = (int)(dest - _PyFrame_GetBytecode(frame)); | ||
| assert(to <= INT_MAX / (int)sizeof(_Py_CODEUNIT)); |
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If there is a real risk that this case occurs, I would prefer to raise an exception.
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Do you mean something like this?
if (to <= INT_MAX / (int)sizeof(_Py_CODEUNIT)) {
PyErr_SetString(PyExc_OverflowError, "instruction offset is too large for int");
return NULL;
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I will close this one request
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This pull request adds an assertion to the _Py_call_instrumentation_jump function to catch potential integer overflow in the expression
to * (int)sizeof(_Py_CODEUNIT).