[Bug tree-optimization/114206] recursive function call vs local variable addresses

[congli at smail dot nju.edu.cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114206

--- Comment #2 from congli <congli at smail dot nju.edu.cn> ---
That's correct. But I think it is not that reasonable if we treat the `b` like
`b` is a `static const` variable rather than a `const` variable? Any documents
telling this?