From 12ce9f268909435b49f558d1d3c15ad7591d6fe8 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Tue, 26 Feb 2019 13:47:14 +1100
Subject: [PATCH] py/compile: Fix handling of unwinding BaseException in async
 with.

All exceptions that unwind through the async-with must be caught and
BaseException is the top-level class, which includes Exception and others.

Fixes issue #4552.
---
 py/compile.c                   |  2 +-
 tests/basics/async_with.py     | 10 ++++++++++
 tests/basics/async_with.py.exp |  3 +++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/py/compile.c b/py/compile.c
index 4aaa68e6ce..e660e668c4 100644
--- a/py/compile.c
+++ b/py/compile.c
@@ -1830,7 +1830,7 @@ STATIC void compile_async_with_stmt_helper(compiler_t *comp, int n, mp_parse_nod
 
         // Detect if TOS an exception or not
         EMIT(dup_top);
-        EMIT_LOAD_GLOBAL(MP_QSTR_Exception);
+        EMIT_LOAD_GLOBAL(MP_QSTR_BaseException);
         EMIT_ARG(binary_op, MP_BINARY_OP_EXCEPTION_MATCH);
         EMIT_ARG(pop_jump_if, false, l_ret_unwind_jump); // if not an exception then we have case 3
 
diff --git a/tests/basics/async_with.py b/tests/basics/async_with.py
index 5af0c5d955..f7774055cf 100644
--- a/tests/basics/async_with.py
+++ b/tests/basics/async_with.py
@@ -27,3 +27,13 @@ try:
     o.send(None)
 except ValueError:
     print('ValueError')
+
+# test raising BaseException to make sure it is handled by the async-with
+async def h():
+    async with AContext():
+        raise BaseException
+o = h()
+try:
+    o.send(None)
+except BaseException:
+    print('BaseException')
diff --git a/tests/basics/async_with.py.exp b/tests/basics/async_with.py.exp
index d00b18c969..6bbf84cb4b 100644
--- a/tests/basics/async_with.py.exp
+++ b/tests/basics/async_with.py.exp
@@ -6,3 +6,6 @@ enter
 1
 exit <class 'ValueError'> error
 ValueError
+enter
+exit <class 'BaseException'> 
+BaseException