[issue39689] struct and memoryview tests rely on undefined behavior (as revealed by clang 9)

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset 572ef747692055a270a9fbf8eeaf5c4a15c8e332 by Miss Islington (bot) in branch '3.8':
bpo-39689: Do not use native packing for format "?" with standard size (GH-18969)
https://github.com/python/cpython/commit/572ef747692055a270a9fbf8eeaf5c4a15c8e332


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<https://bugs.python.org/issue39689>
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