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Possible uninitialized variable in Objects/obmalloc.c #81913
Description
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 = None
closed_at = <Date 2019-08-20.14:30:56.246>
created_at = <Date 2019-07-31.14:17:16.583>
labels = ['3.8', 'build', '3.7', '3.9']
title = 'Possible uninitialized variable in Objects/obmalloc.c'
updated_at = <Date 2019-08-20.14:30:56.237>
user = 'https://github.com/nanjekyejoannah'bugs.python.org fields:
activity = <Date 2019-08-20.14:30:56.237>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2019-08-20.14:30:56.246>
closer = 'vstinner'
components = []
creation = <Date 2019-07-31.14:17:16.583>
creator = 'nanjekyejoannah'
dependencies = []
files = []
hgrepos = []
issue_num = 37732
keywords = ['patch']
message_count = 6.0
messages = ['348807', '349952', '349998', '350002', '350005', '350006']
nosy_count = 3.0
nosy_names = ['vstinner', 'nanjekyejoannah', 'hansrajdas']
pr_nums = ['15309', '15333', '15342', '15343']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue37732'
versions = ['Python 3.7', 'Python 3.8', 'Python 3.9']
Activity
nanjekyejoannah commentedon Jul 31, 2019
Here is a compilation warning I got;
Objects/obmalloc.c: In function ‘_PyObject_Malloc’:
Objects/obmalloc.c:1646:16: warning: ‘ptr’ may be used uninitialized in this function [-Wmaybe-uninitialized]
return ptr;
^~~
We can investigate If its not a false alarm.
vstinner commentedon Aug 19, 2019
bpo-37869 has been marked as a duplicate of this issue.
vstinner commentedon Aug 20, 2019
New changeset 18f8dcf by Victor Stinner in branch 'master':
bpo-37732: Fix GCC warning in _PyObject_Malloc() (GH-15333)
18f8dcf
vstinner commentedon Aug 20, 2019
New changeset 30e5aff by Victor Stinner in branch '3.8':
bpo-37732: Fix GCC warning in _PyObject_Malloc() (GH-15333) (GH-15342)
30e5aff
vstinner commentedon Aug 20, 2019
New changeset c9a484a by Victor Stinner in branch '3.7':
bpo-37732: Fix GCC warning in _PyObject_Malloc() (GH-15333) (GH-15342) (GH-15343)
c9a484a
vstinner commentedon Aug 20, 2019
Thanks Joannah for the bug report. I fixed the warning on 3.7, 3.8 and master branches.