[Bug tree-optimization/105337] [12 Regression] wrong code at -Os and above on x86_64-linux-gnu

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105337

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Ah, but the testcase has UB: c is used uninitialized.