bpo-42562: Fix issue when dis failed to parse function that has no line numbers (GH-23632)
Fix issue when dis failed to parse function that has only annotations
diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index d0743d6..56d8771 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -166,6 +166,20 @@ def bug1333982(x=[]):
bug1333982.__code__.co_firstlineno + 2,
bug1333982.__code__.co_firstlineno + 1)
+
+def bug42562():
+ pass
+
+
+# Set line number for 'pass' to None
+bug42562.__code__ = bug42562.__code__.replace(co_linetable=b'\x04\x80\xff\x80')
+
+
+dis_bug42562 = """\
+ 0 LOAD_CONST 0 (None)
+ 2 RETURN_VALUE
+"""
+
_BIG_LINENO_FORMAT = """\
%3d 0 LOAD_GLOBAL 0 (spam)
2 POP_TOP
@@ -520,6 +534,9 @@ def test_bug_1333982(self):
self.do_disassembly_test(bug1333982, dis_bug1333982)
+ def test_bug_42562(self):
+ self.do_disassembly_test(bug42562, dis_bug42562)
+
def test_big_linenos(self):
def func(count):
namespace = {}