New submission from Michał Radwański <lisklusow...@gmail.com>: Code triggering bug:
import time time.sleep(2**63 / 10**9) Result: ValueError: sleep length must be non-negative The problem is with the macro that checks the range of provided double: Line 228 of Include/pymath.h: #define _Py_InIntegralTypeRange(type, v) (_Py_IntegralTypeMin(type) <= v && v <= _Py_IntegralTypeMax(type)) The type here is _PyTime_t, which is a typedef to int64_t. Proposed solution is to change <= into <, since float(2**63-1) == float(2**63), and that means that none double can ever be equal to 2**63-1. ---------- components: Interpreter Core messages: 323676 nosy: belopolsky, enedil, lemburg, vstinner priority: normal severity: normal status: open title: Overflow when casting from double to time_t, and_PyTime_t. type: behavior versions: Python 3.6, Python 3.7, Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34423> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
