[Bug libc/18447] memstream.c:92 dereferencing type-punned pointer -Werror=strict-aliasing

[darlingm at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18447

--- Comment #1 from darlingm at gmail dot com ---
Attempted a temporary workaround of configure
CFLAGS="-Wno-error=strict-aliasing", which errored saying "glibc cannot be
compiled without optimization"

Tried CFLAGS="-Wno-error=strict-aliasing -fno-strict-aliasing" with the same
error.

Ran across that these cflags conflict with -O2, and was able to get past it by
using CFLAGS="-Wno-error=strict-aliasing -fno-strict-aliasing -O2"

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