py/vm: Fix case of throwing GeneratorExit type into yield-from.

mp_make_raise_obj must be used to convert a possible exception type to an
instance object, otherwise the VM may raise a non-exception object.

An existing test is adjusted to test this case, with the original test
already moved to generator_throw.py.

1 files changed, 11 insertions, 5 deletions

diff --git a/tests/basics/gen_yield_from_throw2.py b/tests/basics/gen_yield_from_throw2.py
index 0abfdd8cc3..6b59a7835a 100644
--- a/tests/basics/gen_yield_from_throw2.py
+++ b/tests/basics/gen_yield_from_throw2.py
@@ -1,18 +1,24 @@
-# generator ignores a thrown GeneratorExit (this is allowed)
+# outer generator ignores a thrown GeneratorExit (this is allowed)
 
 def gen():
     try:
         yield 123
     except GeneratorExit:
         print('GeneratorExit')
-    yield 456
-        
+
+def gen2():
+    try:
+        yield from gen()
+    except GeneratorExit:
+        print('GeneratorExit outer')
+    yield 789
+
 # thrown a class
-g = gen()
+g = gen2()
 print(next(g))
 print(g.throw(GeneratorExit))
 
 # thrown an instance
-g = gen()
+g = gen2()
 print(next(g))
 print(g.throw(GeneratorExit()))