gh-94485: Set line number of module's RESUME instruction to 0, as specified by PEP 626

[iritkatriel]

#94485

• Issue: frame.f_lineno can be None #94485

[tiran]

I think this needs a bytecode magic bump. The necessity to regen test_frozenmain.h indicate that the byte code has changed in an incompatible way. Better bump the magic now than in a later beta or rc.

[tiran]

Could you please run make patchcheck, too? One Azure test is failing. Commit c0453a4 added a stray white space:

diff --git a/Lib/test/test_compile.py b/Lib/test/test_compile.py
index b778eff12f5..ab1685d3e5b 100644
--- a/Lib/test/test_compile.py
+++ b/Lib/test/test_compile.py
@@ -1032,8 +1032,8 @@ def test_uses_slice_instructions(self):
         def check_op_count(func, op, expected):
             actual = 0
             for instr in dis.Bytecode(func):
-                 if instr.opname == op:
-                     actual += 1
+                if instr.opname == op:
+                    actual += 1
             self.assertEqual(actual, expected)
 
         def load():
[heimes@seneca cpytho

[tiran]

The PR looks technically correct and the change makes sense to me. I'm not an expert for Python bytecode, though. Feel free to either merge the PR now or wait for approval by an expert.

[pablogsal]

LGTM

[miss-islington]

Thanks @iritkatriel for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.11.
🐍🍒⛏🤖

[miss-islington]

Sorry, @iritkatriel and @ambv, I could not cleanly backport this to 3.11 due to a conflict.
Please backport using cherry_picker on command line.
cherry_picker 324d01944d16868b07df9e8eef6987766a31a36d 3.11

[ambv]

Now backporting '324d01944d16868b07df9e8eef6987766a31a36d' into '3.11'
Error cherry-pick 324d01944d16868b07df9e8eef6987766a31a36d.
Auto-merging Python/compile.c
CONFLICT (content): Merge conflict in Python/compile.c
Auto-merging Programs/test_frozenmain.h
CONFLICT (content): Merge conflict in Programs/test_frozenmain.h
Auto-merging Lib/test/test_dis.py
CONFLICT (content): Merge conflict in Lib/test/test_dis.py
Auto-merging Lib/test/test_compile.py
CONFLICT (content): Merge conflict in Lib/test/test_compile.py
Auto-merging Lib/importlib/_bootstrap_external.py
CONFLICT (content): Merge conflict in Lib/importlib/_bootstrap_external.py
error: could not apply 324d01944d... gh-94485: Set line number of module's RESUME instruction to 0, as specified by PEP 626 (GH-94552)

Fun backport, looking 😎

[bedevere-bot]

GH-94562 is a backport of this pull request to the 3.11 branch.