bjoernager/rust
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Dogfood {exclusive,half-open} ranges in compiler (nfc)

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In particular, this allows us to write more explicit matches that
avoid the pitfalls of using a fully general fall-through case, yet
remain fairly ergonomic. Less logic is in guard cases, more is in
the actual exhaustive case analysis.

No functional changes.
This commit is contained in:
Jubilee Young 2020-10-22 11:42:44 -07:00
parent a9cd294cf2
commit 0e88db7db4
6 changed files with 14 additions and 10 deletions
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4
compiler/rustc_session/src/filesearch.rs
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@ -153,14 +153,14 @@ fn find_libdir(sysroot: &Path) -> Cow<'static, str> {
const SECONDARY_LIB_DIR: &str = "lib";
match option_env!("CFG_LIBDIR_RELATIVE") {
Some(libdir) if libdir != "lib" => libdir.into(),
_ => {
None | Some("lib") => {
if sysroot.join(PRIMARY_LIB_DIR).join(RUST_LIB_DIR).exists() {
PRIMARY_LIB_DIR.into()
} else {
SECONDARY_LIB_DIR.into()
}
}
Some(libdir) => libdir.into(),
}
}