8000 GH-91409: Don't overwrite valid locations with `NOP` locations by brandtbucher · Pull Request #95067 · python/cpython · GitHub
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GH-91409: Don't overwrite valid locations with NOP locations #95067

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Merged
merged 3 commits into from
Jul 20, 2022
Merged

GH-91409: Don't overwrite valid locations with NOP locations #95067

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1eed53b
Add failing regression tests
brandtbucher Jul 20, 2022
de75482
Don't overwrite valid locations with NOP locations
brandtbucher Jul 20, 2022
8348510
blurb add
brandtbucher Jul 20, 2022
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Add failing regression tests
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@brandtbucher
brandtbucher committed Jul 20, 2022
commit 1eed53b37f7d75fbde01c0cfafe11f2b9276e30b
38 changes: 38 additions & 0 deletions Lib/test/test_compile.py
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Expand Up @@ -1202,6 +1202,44 @@ def test_multiline_assert_rewritten_as_method_call(self):
tree.body[0] = new_node
compile(tree, "<test>", "exec")

def test_push_null_load_global_positions(self):
source_template = """
import abc, dis
import ast as art

abc = None
dix = dis
ast = art

def f():
{}
"""
for body in [
" abc.a()",
" art.a()",
" ast.a()",
" dis.a()",
" dix.a()",
" abc[...]()",
" art()()",
" (ast or ...)()",
" [dis]()",
" (dix + ...)()",
]:
with self.subTest(body):
namespace = {}
source = textwrap.dedent(source_template.format(body))
exec(source, namespace)
code = namespace["f"].__code__
self.assertOpcodeSourcePositionIs(
code,
"LOAD_GLOBAL",
line=10,
end_line=10,
column=4,
end_column=7,
)


class TestExpressionStackSize(unittest.TestCase):
# These tests check that the computed stack size for a code object
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0