56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
From 00500c425ba895f1b3591ace3ccd5ee125307559 Mon Sep 17 00:00:00 2001
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From: Remi Collet <remi@remirepo.net>
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Date: Mon, 13 Nov 2017 09:55:10 +0100
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Subject: [PATCH] Fixed bug #75514 mt_rand returns value outside [$min,$max]+
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on 32-bit
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---
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ext/standard/mt_rand.c | 4 ++--
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ext/standard/tests/math/bug75514.phpt | 12 ++++++++++++
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2 files changed, 14 insertions(+), 2 deletions(-)
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create mode 100644 ext/standard/tests/math/bug75514.phpt
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diff --git a/ext/standard/mt_rand.c b/ext/standard/mt_rand.c
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index 2335a92..6669cbc 100644
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--- a/ext/standard/mt_rand.c
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+++ b/ext/standard/mt_rand.c
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@@ -294,7 +294,7 @@ PHPAPI zend_long php_mt_rand_range(zend_long min, zend_long max)
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* rand() allows min > max, mt_rand does not */
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PHPAPI zend_long php_mt_rand_common(zend_long min, zend_long max)
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{
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- zend_long n;
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+ uint32_t n;
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if (BG(mt_rand_mode) == MT_RAND_MT19937) {
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return php_mt_rand_range(min, max);
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@@ -302,7 +302,7 @@ PHPAPI zend_long php_mt_rand_common(zend_long min, zend_long max)
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/* Legacy mode deliberately not inside php_mt_rand_range()
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* to prevent other functions being affected */
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- n = (zend_long)php_mt_rand() >> 1;
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+ n = php_mt_rand() >> 1;
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RAND_RANGE_BADSCALING(n, min, max, PHP_MT_RAND_MAX);
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return n;
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diff --git a/ext/standard/tests/math/bug75514.phpt b/ext/standard/tests/math/bug75514.phpt
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new file mode 100644
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index 0000000..af97b6d
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--- /dev/null
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+++ b/ext/standard/tests/math/bug75514.phpt
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@@ -0,0 +1,12 @@
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+--TEST--
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+Bug #75514 mt_rand returns value outside [$min,$max]
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+--FILE--
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+<?php
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+mt_srand(0, MT_RAND_PHP);
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+var_dump(mt_rand(0,999999999), mt_rand(0,999));
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+?>
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+===Done===
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+--EXPECT--
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+int(448865905)
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+int(592)
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+===Done===
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--
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2.9.5
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