Struct rustc_mir::util::liveness::LivenessMode [−] [src]

pub struct LivenessMode {
    pub include_regular_use: bool,
    pub include_drops: bool,
}

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Fields

include_regular_use: bool

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

If true, then we will consider "regular uses" of a variable to be live. For example, if the user writes foo(x), then this is a regular use of the variable x.

include_drops: bool

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

If true, then we will consider (implicit) drops of a variable to be live. For example, if the user writes { let x = vec![...]; .. }, then the drop at the end of the block is an implicit drop.

NB. Despite its name, a call like ::std::mem::drop(x) is not considered a drop for this purposes, but rather a regular use.