[New-bugs-announce] [issue36803] Getting a lot of runtime misaligned address error while building python 2.7.6 with UBSAN

[dibya ranjan mishra]

New submission from dibya ranjan mishra <dibyamishra016 at gmail.com>:

I downloaded python 2.7.6 source and am trying to build with UBSAN flag following the instructions https://devguide.python.org/clang/. But I am getting a lot of misaligned address errors when I run make or make test command. Below is an example:

Objects/listobject.c:161:5: runtime error: member access within misaligned address 0x2adff0773228 for type 'struct (anonymous struct at Include/objimpl.h:253:5)', which requires 16 byte alignment


I need this ubsan enabled python 2.7 as a part of my project.

----------
components: Build
messages: 341453
nosy: dibya ranjan mishra
priority: normal
severity: normal
status: open
title: Getting a lot of runtime misaligned address error while building python 2.7.6 with UBSAN
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36803>
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