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[3.13] GH-127953: Make line number lookup O(1) regardless of the size of the code object (#129127)

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GH-127953: Make line number lookup O(1) regardless of the size of the code object (GH-128350)
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Mark Shannon 2025-04-07 19:15:02 +01:00 • committed by GitHub
parent 1fcf409ace
commit 3f3863281b
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5 changed files with 208 additions and 156 deletions
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Objects/codeobject.c
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@ -987,6 +987,9 @@ PyCode_Addr2Line(PyCodeObject *co, int addrq)
if (addrq < 0) {
return co->co_firstlineno;
}
if (co->_co_monitoring && co->_co_monitoring->lines) {
return _Py_Instrumentation_GetLine(co, addrq/sizeof(_Py_CODEUNIT));
}
assert(addrq >= 0 && addrq < _PyCode_NBYTES(co));
PyCodeAddressRange bounds;
_PyCode_InitAddressRange(co, &bounds);