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LibJS: Protect YearFromTime against non-finite times
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@ -5,6 +5,7 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/NumericLimits.h>
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#include <AK/StringBuilder.h>
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#include <AK/Time.h>
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#include <LibCore/DateTime.h>
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@ -147,6 +148,8 @@ double time_from_year(i32 y)
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i32 year_from_time(double t)
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{
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// the largest integral Number y (closest to +∞) such that TimeFromYear(y) ≤ t
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if (!Value(t).is_finite_number())
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return NumericLimits<i32>::max();
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// Approximation using average number of milliseconds per year. We might have to adjust this guess afterwards.
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auto year = static_cast<i32>(t / (365.2425 * Date::ms_per_day) + 1970);
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