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GH-94262: Don't create frame objects for frames that aren't complete. #94371

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Merged
markshannon merged 11 commits into from
Jul 1, 2022
Merged

GH-94262: Don't create frame objects for frames that aren't complete. #94371

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87e97ae
Add test for creating frame object when making a generator.
markshannon Jun 27, 2022
583d164
Don't expose incomplete frames as frame objects.
markshannon Jun 27, 2022
5043a8b
Add news
markshannon Jun 28, 2022
e81c1f3
Cleanup after test.
markshannon Jun 28, 2022
6d07165
Explain _PyFrame_IsIncomplete()
markshannon Jun 28, 2022
ce0d4b5
Try harder to break things
markshannon Jun 28, 2022
f56451b
Avoid creating frame objects for incomplete frames vai f_back.
markshannon Jun 28, 2022
b69e803
Fix test
markshannon Jun 28, 2022
c648d46
Assert frame is valid when creating frame object.
markshannon Jun 28, 2022
cf0b32c
Prevent test polluting environment
markshannon Jun 28, 2022
939769c
Create all frames on stack from finalizer.
markshannon Jun 29, 2022
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Fix test
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@markshannon
markshannon committed Jun 28, 2022
commit b69e8034d9ee549f5b7816b38056400b64dc6e92
8 changes: 6 additions & 2 deletions Lib/test/test_generators.py
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Original file line number Diff line number Diff line change
Expand Up @@ -182,6 +182,7 @@ def gen():
yield 1

thresholds = gc.get_threshold()

gc.callbacks.append(cb)
gc.set_threshold(1, 0, 0)
try:
Expand All @@ -197,11 +198,14 @@ def __del__(self):
sneaky = Sneaky()
sneaky._s = Sneaky()
sneaky._s._s = sneaky
del sneaky

gc.set_threshold(1, 0, 0)
try:
gen()
del sneaky
try:
gen()
except KeyboardInterrupt:
pass
finally:
gc.set_threshold(*thresholds)

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