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Fix adding small Duration to large Instant on JS and Native #264

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merged 1 commit into from
Mar 30, 2023

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When adding a positive Duration < 1 second to an Instant far in the future for which the addition implementation overflows and throws an exception, the catch blocks would only check if the seconds component of the Duration is > 0. However since the Duration is < 1 second, the seconds component is not > 0 and Instant.MIN is returned instead of Instant.MAX.

This was fixed by replacing the check against the seconds component of the Duration with a check against the whole Duration like it was already done in the JVM implementation.

fixes #263

When adding a positive Duration < 1 second to an Instant far in the
future for which the addition implementation overflows and throws an
exception, the catch blocks would only check if the seconds component of
the Duration is > 0. However since the Duration is < 1 second, the
seconds component is not > 0 and Instant.MIN is returned instead of
Instant.MAX.

This was fixed by replacing the check against the seconds component of
the Duration with a check against the whole Duration like it was already
done in the JVM implementation.

See Kotlin#263
@ilya-g ilya-g self-assigned this Mar 28, 2023
@ilya-g ilya-g merged commit 5a73782 into Kotlin:master Mar 30, 2023
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ilya-g commented Mar 30, 2023

Thanks for the fix!

@lukellmann lukellmann deleted the addition-bug branch March 30, 2023 06:33
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Bug in Instant.plus(Duration) on JS for large Instants and small Durations
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