Issue 1881. Increased the stack limit from 500 to 1500. Also added
a test for this (and because of this test you'll see in stderr a
message that parser.c sends before raising MemoryError).
Thanks Ralf Schmitt.
diff --git a/Lib/test/test_parser.py b/Lib/test/test_parser.py
index fd28610..4119112 100644
--- a/Lib/test/test_parser.py
+++ b/Lib/test/test_parser.py
@@ -480,11 +480,28 @@
st = parser.suite('a = u"\u1"')
self.assertRaises(SyntaxError, parser.compilest, st)
+class ParserStackLimitTestCase(unittest.TestCase):
+ """try to push the parser to/over it's limits.
+ see http://bugs.python.org/issue1881 for a discussion
+ """
+ def _nested_expression(self, level):
+ return "["*level+"]"*level
+
+ def test_deeply_nested_list(self):
+ e = self._nested_expression(99)
+ st = parser.expr(e)
+ st.compile()
+
+ def test_trigger_memory_error(self):
+ e = self._nested_expression(100)
+ self.assertRaises(MemoryError, parser.expr, e)
+
def test_main():
test_support.run_unittest(
RoundtripLegalSyntaxTestCase,
IllegalSyntaxTestCase,
CompileTestCase,
+ ParserStackLimitTestCase,
)