bpo-17735: inspect.findsource now raises OSError when co_lineno is out of range (GH-23633)
This can happen when a file was edited after it was imported.
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index 172e6bf..c81d828 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -712,6 +712,17 @@ def test_findsource_without_filename(self):
self.assertRaises(IOError, inspect.findsource, co)
self.assertRaises(IOError, inspect.getsource, co)
+ def test_findsource_with_out_of_bounds_lineno(self):
+ mod_len = len(inspect.getsource(mod))
+ src = '\n' * 2* mod_len + "def f(): pass"
+ co = compile(src, mod.__file__, "exec")
+ g, l = {}, {}
+ eval(co, g, l)
+ func = l['f']
+ self.assertEqual(func.__code__.co_firstlineno, 1+2*mod_len)
+ with self.assertRaisesRegex(IOError, "lineno is out of bounds"):
+ inspect.findsource(func)
+
def test_getsource_on_method(self):
self.assertSourceEqual(mod2.ClassWithMethod.method, 118, 119)