https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87665
Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
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CC| |ville.voutilainen at gmail dot
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--- Comment #8 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
It seems that either -fno-strict-aliasing or -march=native makes it work. That
bears a *striking* similarity to the symptoms seen in
https://bugreports.qt.io/browse/QTBUG-69388 !
