line traces may be missed on backward jumps when instrumented with dtrace

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2018-03-25.12:01:28.011>
labels = ['interpreter-core', 'type-bug', '3.8']
title = 'line traces may be missed on backward jumps when instrumented with dtrace'
updated_at = <Date 2018-03-25.12:01:28.011>
user = 'https://github.com/xdegaye'

bugs.python.org fields:

activity = <Date 2018-03-25.12:01:28.011>
actor = 'xdegaye'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2018-03-25.12:01:28.011>
creator = 'xdegaye'
dependencies = []
files = []
hgrepos = []
issue_num = 33137
keywords = []
message_count = 1.0
messages = ['314408']
nosy_count = 3.0
nosy_names = ['xdegaye', 'lukasz.langa', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'needs patch'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue33137'
versions = ['Python 3.8']