When FLAG_PROPAGATE_PHP_EXCEPTIONS is set, check for unwind or graceful exit before propagate

tests/issue_497_001.phpt

@@ -0,0 +1,37 @@
+--TEST--
+Test V8::executeString() : Issue #497 (segmentation fault calling PHP exit inside object function)
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--FILE--
+<?php
+class Foo {
+    function __destruct() {
+	    var_dump('Foo __destruct');
+    }
+
+    function somecall() {
+	    var_dump('Foo somecall');
+    }
+
+    function bar() {
+	    global $v8;
+	    var_dump('Foo bar');
+    	exit;
+    }
+}
+
+$v8 = new \V8Js();
+$v8->foo = new Foo();
+
+$JS = <<< EOT
+PHP.foo.somecall();
+PHP.foo.bar();
+EOT;
+
+$v8->executeString($JS, '', \V8JS::FLAG_PROPAGATE_PHP_EXCEPTIONS);
+echo 'Not here!!';
+?>
+--EXPECTF--
+string(12) "Foo somecall"
+string(7) "Foo bar"
+string(14) "Foo __destruct"

v8js_object_export.cc

@@ -167,7 +167,7 @@ failure:
 	}
 
 	if(EG(exception)) {
-		if(ctx->flags & V8JS_FLAG_PROPAGATE_PHP_EXCEPTIONS) {
+		if((ctx->flags & V8JS_FLAG_PROPAGATE_PHP_EXCEPTIONS) && !zend_is_graceful_exit(EG(exception)) && !zend_is_unwind_exit(EG(exception))) {
 			zval tmp_zv;
 			ZVAL_OBJ(&tmp_zv, EG(exception));
 			return_value = isolate->ThrowException(zval_to_v8js(&tmp_zv, isolate));