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[Bug build/19444] build failures with -O1 due to -Wmaybe-uninitialized


https://sourceware.org/bugzilla/show_bug.cgi?id=19444

--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
The detailed answer for building at -O0 is here:

https://sourceware.org/glibc/wiki/FAQ#Why_do_I_get:.60.23error_.22glibc_cannot_be_compiled_without_optimization.22.27.2C_when_trying_to_compile_GNU_libc_with_GNU_CC.3F

A similar answer potentially applies to -O1.

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