Fix bogus traces with ReflectionGenerator::getTrace()

NEWS

@@ -17,6 +17,9 @@ PHP                                                                        NEWS
 - Standard:
   . Fixed bug #70295 (Segmentation fault with setrawcookie). (Bob)
 
+- Reflection:
+  . Fixed bug causing bogus traces for ReflectionGenerator::getTrace(). (Bob)
+
 20 Aug 2015, PHP 7.0.0 RC 1
 
 - Core:

Zend/zend_generators.c

@@ -273,7 +273,7 @@ static ZEND_COLD zend_function *zend_generator_get_constructor(zend_object *obje
 
 ZEND_API zend_execute_data *zend_generator_check_placeholder_frame(zend_execute_data *ptr)
 {
-	if (!ptr->func && ptr->prev_execute_data && Z_OBJ(ptr->This)) {
+	if (!ptr->func && Z_OBJ(ptr->This)) {
 		if (Z_OBJCE(ptr->This) == zend_ce_generator) {
 			zend_generator *generator = (zend_generator *) Z_OBJ(ptr->This);
 			zend_generator *root = (generator->node.children < 1 ? generator : generator->node.ptr.leaf)->node.ptr.root;

ext/reflection/tests/ReflectionGenerator_basic.phpt

@@ -39,7 +39,11 @@ object(Generator)#2 (0) {
 }
 array(1) {
   [0]=>
-  array(2) {
+  array(4) {
+    ["file"]=>
+    string(%d) "%s"
+    ["line"]=>
+    int(%d)
     ["function"]=>
     string(3) "foo"
     ["args"]=>

ext/reflection/tests/ReflectionGenerator_getTrace.phpt

@@ -0,0 +1,53 @@
+--TEST--
+ReflectionGenerator::getTrace() over multiple Generators
+--FILE--
+<?php
+
+function foo() {
+	yield 1;
+	yield 2;
+}
+
+function bar()
+{
+    yield from foo();
+}
+
+function baz()
+{
+    yield from bar();
+}
+
+$gen = baz();
+$gen->valid();
+
+var_dump((new ReflectionGenerator($gen))->getTrace());
+
+?>
+--EXPECTF--
+array(2) {
+  [0]=>
+  array(4) {
+    ["file"]=>
+    string(%d) "%s"
+    ["line"]=>
+    int(%d)
+    ["function"]=>
+    string(3) "foo"
+    ["args"]=>
+    array(0) {
+    }
+  }
+  [1]=>
+  array(4) {
+    ["file"]=>
+    string(%d) "%s"
+    ["line"]=>
+    int(%d)
+    ["function"]=>
+    string(3) "bar"
+    ["args"]=>
+    array(0) {
+    }
+  }
+}

ext/reflection/tests/ReflectionGenerator_in_Generator.phpt

@@ -46,7 +46,11 @@ object(ReflectionFunction)#4 (1) {
 NULL
 array(1) {
   [0]=>
-  array(2) {
+  array(4) {
+    ["file"]=>
+    string(%d) "%s"
+    ["line"]=>
+    int(%d)
     ["function"]=>
     string(9) "{closure}"
     ["args"]=>