Crash on AST with misordered linenos #92597
Comments
JelleZijlstra
added
type-crash
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Simple repro: from ast import *
tree = Module(body=[
Import(names=[alias(name='builtins', lineno=1, col_offset=0)], lineno=1, col_offset=0),
Import(names=[alias(name='traceback', lineno=0, col_offset=0)], lineno=0, col_offset=1)
], type_ignores=[])
compile(tree, "x", "exec", dont_inherit=True) |
JelleZijlstra
changed the title
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944fffe is the first bad commit |
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Looks like the ast defaults the end_lineno to None, which then becomes 0 in the compiler. Maybe the ast should default it be equal to lineno? Or should None become -1 in c? |
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Both, perhaps. |
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cc @pablogsal |
That's what we do in some parts that deal with these information. I can prepare a PR |
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The question is if we should manage this in the AST creation routines or in the compiler. I assume that the first is more resilient but what do others think? |
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FWIW, this seems to affect pytest's assertion rewriting as well. As soon as I'm running pytest against e.g.: def test_foo():
passwith a Python 3.11.0b1 configured with which is here: and indeed Turning pytest's assertion rewriting off with Passing the diff --git i/src/_pytest/assertion/rewrite.py w/src/_pytest/assertion/rewrite.py
index 81096764e..5d7392dd4 100644
--- i/src/_pytest/assertion/rewrite.py
+++ w/src/_pytest/assertion/rewrite.py
@@ -727,7 +727,7 @@ def run(self, mod: ast.Module) -> None:
ast.alias("_pytest.assertion.rewrite", "@pytest_ar"),
]
imports = [
- ast.Import([alias], lineno=lineno, col_offset=0) for alias in aliases
+ ast.Import([alias], lineno=lineno, end_lineno=item.end_lineno, col_offset=0) for alias in aliases
]
mod.body[pos:pos] = imports
cc @bluetech - though I suppose we don't necessarily need to fix this in pytest, hence I didn' t open an issue over there. |
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Another project affected in the wild seems to be flask: |
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I'm working on a patch, will have a draft PR ready soon |
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@pablogsal Do you have time to work on this, or should I fix it? |
I have opened a PR for this. |
…can be compiled (pythonGH-93359) (cherry picked from commit 705eaec) Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
…itions can be compiled (cherry picked from commit 705eaec)
…es (pythonGH-93398) (cherry picked from commit 8a221a8) Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
./python.exe -m ensurepip./python.exe -m pip install pytest-cov./python.exe -m pytestCrashes with
Assertion failed: (i->i_end_lineno >= i->i_lineno), function write_location_info_long_form, file compile.c, line 7532.lldb stack trace:
Your environment
I put print statements in that show the file it crashes on is
'/usr/local/lib/python3.11/site-packages/pytest_cov/plugin.py', but just running Python on that file doesn't reproduce the crash. I'll try to debug some more.The text was updated successfully, but these errors were encountered: