bpo-39934: Account for control blocks in 'except' in compiler. (GH-22395)

* Account for control blocks in 'except' in compiler. Fixes #39934.

1 files changed, 9 insertions, 0 deletions

diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 4657fd1c0d..09c6eb3375 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -950,6 +950,15 @@ pass
         except SyntaxError:
             self.fail("Empty line after a line continuation character is valid.")
 
+    @support.cpython_only
+    def test_nested_named_except_blocks(self):
+        code = ""
+        for i in range(12):
+            code += f"{'    '*i}try:\n"
+            code += f"{'    '*(i+1)}raise Exception\n"
+            code += f"{'    '*i}except Exception as e:\n"
+        code += f"{' '*4*12}pass"
+        self._check_error(code, "too many statically nested blocks")
 
 def test_main():
     support.run_unittest(SyntaxTestCase)