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-rw-r--r--Lib/test/test_exceptions.py11
-rw-r--r--Misc/NEWS.d/next/Core and Builtins/2021-04-29-13-11-44.bpo-43933.mvoV6O.rst3
-rw-r--r--Objects/frameobject.c8
3 files changed, 20 insertions, 2 deletions
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index 590935c..3810108 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -2081,7 +2081,10 @@ class PEP626Tests(unittest.TestCase):
while t.tb_next:
t = t.tb_next
frame = t.tb_frame
- self.assertEqual(frame.f_lineno-frame.f_code.co_firstlineno, line)
+ if line is None:
+ self.assertEqual(frame.f_lineno, line)
+ else:
+ self.assertEqual(frame.f_lineno-frame.f_code.co_firstlineno, line)
def test_lineno_after_raise_simple(self):
def simple():
@@ -2153,6 +2156,12 @@ class PEP626Tests(unittest.TestCase):
pass
self.lineno_after_raise(after_with, 2)
+ def test_missing_lineno_shows_as_none(self):
+ def f():
+ 1/0
+ self.lineno_after_raise(f, 1)
+ f.__code__ = f.__code__.replace(co_linetable=b'\x04\x80\xff\x80')
+ self.lineno_after_raise(f, None)
if __name__ == '__main__':
unittest.main()
diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-04-29-13-11-44.bpo-43933.mvoV6O.rst b/Misc/NEWS.d/next/Core and Builtins/2021-04-29-13-11-44.bpo-43933.mvoV6O.rst
new file mode 100644
index 0000000..8d11a8c
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2021-04-29-13-11-44.bpo-43933.mvoV6O.rst
@@ -0,0 +1,3 @@
+If the current position in a frame has no line number then set the f_lineno
+attribute to None, instead of -1, to conform to PEP 626. This should not
+normally be possible, but might occur in some unusual circumstances.
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index b0487c2..5920ed8 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -53,7 +53,13 @@ PyFrame_GetLineNumber(PyFrameObject *f)
static PyObject *
frame_getlineno(PyFrameObject *f, void *closure)
{
- return PyLong_FromLong(PyFrame_GetLineNumber(f));
+ int lineno = PyFrame_GetLineNumber(f);
+ if (lineno < 0) {
+ Py_RETURN_NONE;
+ }
+ else {
+ return PyLong_FromLong(lineno);
+ }
}
static PyObject *