Allow throwing exceptions from generators

The missing piece is how one can find the next stack frame, which is
required for dtor'ing arguments pushed to the stack. As the generator
execute_data does not live on the stack one can't use it to figure out the
start of the next stack frame. So there must be some other method.

1 files changed, 28 insertions, 0 deletions

diff --git a/Zend/tests/generators/generator_throwing_exception.phpt b/Zend/tests/generators/generator_throwing_exception.phpt
new file mode 100644
index 0000000000..5df4a81132
--- /dev/null
+++ b/Zend/tests/generators/generator_throwing_exception.phpt
@@ -0,0 +1,28 @@
+--TEST--
+Generators can throw exceptions
+--FILE--
+<?php
+
+function *gen() {
+    yield 'foo';
+    throw new Exception('test');
+    yield 'bar';
+}
+
+$gen = gen();
+
+var_dump($gen->current());
+
+try {
+    $gen->next();
+} catch (Exception $e) {
+    echo 'Caught exception with message "', $e->getMessage(), '"', "\n";
+}
+
+var_dump($gen->current());
+
+?>
+--EXPECT--
+string(3) "foo"
+Caught exception with message "test"
+NULL