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Signed integer overflow in ext/calendar/dow.c:38 #16258

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YuanchengJiang opened this issue Oct 6, 2024 · 0 comments
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Signed integer overflow in ext/calendar/dow.c:38 #16258

YuanchengJiang opened this issue Oct 6, 2024 · 0 comments
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@devnexen
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Bug Extension: calendar Status: Verified

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@YuanchengJiang
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Description

The following code:

<?php
jddayofweek(9223372036854775807, 1);

Resulted in this output:

ext/calendar/dow.c:38:13: runtime error: signed integer overflow: 9223372036854775807 + 1 cannot be represented in type 'long'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /php-src/ext/calendar/dow.c:38:13

PHP Version

PHP 8.4.0-dev

Operating System

ubuntu 22.04
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@devnexen devnexen

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Bug Extension: calendar Status: Verified
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Fix GH-16258 overflow on jddayofweek argument. devnexen/php-src
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@devnexen @YuanchengJiang