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Fix memory leak

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This fixes oss-fuzz #47648
This commit is contained in:
Dmitry Stogov 2022-05-30 11:32:17 +03:00
parent 591bd1186f
commit 3a8912fb7c
2 changed files with 27 additions and 1 deletions
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2
ext/opcache/jit/zend_jit_x86.dasc
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@ -6183,7 +6183,7 @@ static int zend_jit_assign_to_typed_ref(dasm_State **Dst,
| // if (UNEXPECTED(EG(exception) != NULL)) {
| MEM_OP2_1_ZTS cmp, aword, executor_globals, exception, 0, r0
| je >8 // END OF zend_jit_assign_to_variable()
| jmp ->exception_handler_undef
| jmp ->exception_handler
} else {
| jmp >8
}

26
ext/opcache/tests/jit/assign_053.phpt Normal file
View File

@ -0,0 +1,26 @@
--TEST--
JIT ASSIGN: memory leak
--INI--
opcache.enable=1
opcache.enable_cli=1
opcache.file_update_protection=0
opcache.jit_buffer_size=1M
opcache.protect_memory=1
--FILE--
<?php
class Test {
public string $x;
}
$test=new Test;
$test->x = " $y ";
$r = &$test->x + ($r = $y);
?>
--EXPECTF--
Warning: Undefined variable $y in %sassign_053.php on line 6
Warning: Undefined variable $y in %sassign_053.php on line 7
Fatal error: Uncaught TypeError: Cannot assign null to reference held by property Test::$x of type string in %sassign_053.php:7
Stack trace:
#0 {main}
thrown in %sassign_053.php on line 7