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A comment on Undefined Behavior Is Really Undefined. Parent comment

Re:Undefined Behavior Is Really Undefined by yjftsjthsd-h on Sunday December 02, 2018 @12:32PM (#18583314)
IIRC, the code is actually `if O>2` or so; 3 and up are literally identical.

EDIT: Per https://wiki.gentoo.org/wiki/GCC_optimization#What_about_-O_... it's `enabled = (level >= 3);`

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