continue and break in finally with return in try results with segfault

isidentical

BPO	37830
Nosy	@ncoghlan, @vstinner, @ericvsmith, @ethanfurman, @ambv, @markshannon, @serhiy-storchaka, @pppery, @pablogsal, @tirkarthi, @isidentical
PRs	bpo-37830: handle specific cases on FOR_ITER #15221 bpo-37830: Revert "bpo-32489: Allow 'continue' in 'finally' clause. (GH-5822)" #15230 bpo-37830: Optimize return statement bytecode with fixing segfaults #15247 bpo-37830: Fix compilation of break and continue in finally. #15320 [3.8] bpo-37830: Fix compilation of break and continue in finally. (GH-15320) #15456

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2019-08-24.10:57:26.563>
created_at = <Date 2019-08-12.09:33:33.151>
labels = ['interpreter-core', '3.8', '3.9', 'type-crash', 'release-blocker']
title = 'continue and break in finally with return in try results with segfault'
updated_at = <Date 2019-08-24.10:57:26.563>
user = 'https://github.com/isidentical'

bugs.python.org fields:

activity = <Date 2019-08-24.10:57:26.563>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2019-08-24.10:57:26.563>
closer = 'serhiy.storchaka'
components = ['Interpreter Core']
creation = <Date 2019-08-12.09:33:33.151>
creator = 'BTaskaya'
dependencies = []
files = []
hgrepos = []
issue_num = 37830
keywords = ['patch', '3.8regression']
message_count = 20.0
messages = ['349450', '349451', '349456', '349458', '349460', '349462', '349483', '349513', '349528', '349570', '349578', '349579', '349605', '349693', '349901', '350289', '350300', '350359', '350364', '350365']
nosy_count = 11.0
nosy_names = ['ncoghlan', 'vstinner', 'eric.smith', 'ethan.furman', 'lukasz.langa', 'Mark.Shannon', 'serhiy.storchaka', 'ppperry', 'pablogsal', 'xtreak', 'BTaskaya']
pr_nums = ['15221', '15230', '15247', '15320', '15456']
priority = 'release blocker'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue37830'
versions = ['Python 3.8', 'Python 3.9']