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Fixed bug #55509 (segfault on x86_64 using more than 2G memory). (Laruence)

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This commit is contained in:
Dmitry Stogov 2011-09-13 07:01:46 +00:00
parent 4262382199
commit b6173bee92
2 changed files with 34 additions and 1 deletions
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33
Zend/tests/bug55509.phpt Normal file
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@ -0,0 +1,33 @@
--TEST--
Bug #55509 (segfault on x86_64 using more than 2G memory)
--SKIPIF--
<?php
if (PHP_INT_SIZE == 4) {
die('skip Not for 32-bits OS');
}
?>
--INI--
memory_limit=3G
--FILE--
<?php
$a1 = str_repeat("1", 1024 * 1024 * 1024 * 0.5);
echo "1\n";
$a2 = str_repeat("2", 1024 * 1024 * 1024 * 0.5);
echo "2\n";
$a3 = str_repeat("3", 1024 * 1024 * 1024 * 0.5);
echo "3\n";
$a4 = str_repeat("4", 1024 * 1024 * 1024 * 0.5);
echo "4\n";
$a5 = str_repeat("5", 1024 * 1024 * 1024 * 0.5);
echo "5\n";
$a6 = str_repeat("6", 1024 * 1024 * 1024 * 0.5);
echo "6\n";
?>
--EXPECTF--
1
2
3
4
5
Fatal error: Allowed memory size of %d bytes exhausted (tried to allocate %d bytes) in %s/bug55509.php on line %d

2
Zend/zend_alloc.c
View file

@ -515,7 +515,7 @@ static unsigned int _zend_mm_cookie = 0;
#define ZEND_MM_IS_GUARD_BLOCK(b) (((b)->info._size & ZEND_MM_TYPE_MASK) == ZEND_MM_GUARD_BLOCK)
#define ZEND_MM_NEXT_BLOCK(b) ZEND_MM_BLOCK_AT(b, ZEND_MM_BLOCK_SIZE(b))
#define ZEND_MM_PREV_BLOCK(b) ZEND_MM_BLOCK_AT(b, -(int)((b)->info._prev & ~ZEND_MM_TYPE_MASK))
#define ZEND_MM_PREV_BLOCK(b) ZEND_MM_BLOCK_AT(b, -(ssize_t)((b)->info._prev & ~ZEND_MM_TYPE_MASK))
#define ZEND_MM_PREV_BLOCK_IS_FREE(b) (!((b)->info._prev & ZEND_MM_USED_BLOCK))