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From 3c87945c95c9c31986e690bb046c70e58c8d8896 Mon Sep 17 00:00:00 2001
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From: Xinchen Hui <laruence@php.net>
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Date: Wed, 5 Jun 2013 17:25:00 +0800
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Subject: [PATCH] Fixed bug #64960 (Segfault in gc_zval_possible_root)
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---
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NEWS | 2 ++
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Zend/tests/bug64960.phpt | 40 ++++++++++++++++++++++++++++++++++++++++
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Zend/zend_execute_API.c | 6 ++----
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3 files changed, 44 insertions(+), 4 deletions(-)
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create mode 100644 Zend/tests/bug64960.phpt
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diff --git a/Zend/tests/bug64960.phpt b/Zend/tests/bug64960.phpt
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new file mode 100644
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index 0000000..b31cca3
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--- /dev/null
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+++ b/Zend/tests/bug64960.phpt
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@@ -0,0 +1,40 @@
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+--TEST--
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+Bug #64960 (Segfault in gc_zval_possible_root)
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+--FILE--
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+
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+// this makes ob_end_clean raise an error
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+ob_end_flush();
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+
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+class ExceptionHandler {
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+ public function __invoke (Exception $e)
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+ {
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+ // this triggers the custom error handler
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+ ob_end_clean();
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+ }
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+}
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+
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+// this must be a class, closure does not trigger segfault
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+set_exception_handler(new ExceptionHandler());
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+
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+// exception must be throwed from error handler.
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+set_error_handler(function()
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+{
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+ $e = new Exception;
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+ $e->_trace = debug_backtrace();
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+
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+ throw $e;
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+});
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+
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+// trigger error handler
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+$a['waa'];
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+?>
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+--EXPECTF--
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+Notice: ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush in %sbug64960.php on line 3
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+
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+Fatal error: Uncaught exception 'Exception' in %sbug64960.php:19
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+Stack trace:
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+#0 [internal function]: {closure}(8, 'ob_end_clean():...', '%s', 9, Array)
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+#1 %sbug64960.php(9): ob_end_clean()
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+#2 [internal function]: ExceptionHandler->__invoke(Object(Exception))
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+#3 {main}
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+ thrown in %sbug64960.php on line 19
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diff --git a/Zend/zend_execute_API.c b/Zend/zend_execute_API.c
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index 9781889..687520d 100644
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--- a/Zend/zend_execute_API.c
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+++ b/Zend/zend_execute_API.c
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@@ -263,15 +263,13 @@ void shutdown_executor(TSRMLS_D) /* {{{ */
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if (EG(user_error_handler)) {
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zeh = EG(user_error_handler);
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EG(user_error_handler) = NULL;
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- zval_dtor(zeh);
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- FREE_ZVAL(zeh);
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+ zval_ptr_dtor(&zeh;;
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}
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if (EG(user_exception_handler)) {
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zeh = EG(user_exception_handler);
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EG(user_exception_handler) = NULL;
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- zval_dtor(zeh);
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- FREE_ZVAL(zeh);
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+ zval_ptr_dtor(&zeh;;
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}
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zend_stack_destroy(&EG(user_error_handlers_error_reporting));
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--
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1.7.11.5
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