diff options
| -rw-r--r-- | tests/ui/bootstrap/rustc_bootstap.force_stable.stderr | 10 | ||||
| -rw-r--r-- | tests/ui/bootstrap/rustc_bootstap.rs | 47 |
2 files changed, 57 insertions, 0 deletions
diff --git a/tests/ui/bootstrap/rustc_bootstap.force_stable.stderr b/tests/ui/bootstrap/rustc_bootstap.force_stable.stderr new file mode 100644 index 00000000000..f378f3c70dd --- /dev/null +++ b/tests/ui/bootstrap/rustc_bootstap.force_stable.stderr @@ -0,0 +1,10 @@ +error: the option `Z` is only accepted on the nightly compiler + +help: consider switching to a nightly toolchain: `rustup default nightly` + +note: selecting a toolchain with `+toolchain` arguments require a rustup proxy; see <https://rust-lang.github.io/rustup/concepts/index.html> + +note: for more information about Rust's stability policy, see <https://doc.rust-lang.org/book/appendix-07-nightly-rust.html#unstable-features> + +error: 1 nightly option were parsed + diff --git a/tests/ui/bootstrap/rustc_bootstap.rs b/tests/ui/bootstrap/rustc_bootstap.rs new file mode 100644 index 00000000000..3d792ef4be4 --- /dev/null +++ b/tests/ui/bootstrap/rustc_bootstap.rs @@ -0,0 +1,47 @@ +//! Check `RUSTC_BOOTSTRAP`'s behavior in relation to feature stability and what rustc considers +//! itself to be (stable vs non-stable ). +//! +//! `RUSTC_BOOTSTRAP` accepts: +//! +//! - `1`: cheat, allow usage of unstable features even if rustc thinks it is a stable compiler. +//! - `x,y,z`: comma-delimited list of crates. +//! - `-1`: force rustc to think it is a stable compiler. + +// ignore-tidy-linelength + +//@ revisions: default_nightly cheat cheat_single_crate cheat_multi_crate force_stable invalid_zero invalid_junk +//@ only-nightly + +//@[default_nightly] unset-rustc-env:RUSTC_BOOTSTRAP +//@[default_nightly] check-pass + +// For a nightly compiler, this is same as `default_nightly` as if `RUSTC_BOOTSTRAP` was unset. +//@[invalid_zero] rustc-env:RUSTC_BOOTSTRAP=0 +//@[invalid_zero] check-pass + +// Invalid values are silently discarded, same as `default_nightly`, i.e. as if `RUSTC_BOOTSTRAP` +// was unset. +//@[invalid_junk] rustc-env:RUSTC_BOOTSTRAP=* +//@[invalid_junk] check-pass + +//@[cheat] rustc-env:RUSTC_BOOTSTRAP=1 +//@[cheat] check-pass + +//@[cheat_single_crate] rustc-env:RUSTC_BOOTSTRAP=x +//@[cheat_single_crate] check-pass + +//@[cheat_multi_crate] rustc-env:RUSTC_BOOTSTRAP=x,y,z +//@[cheat_multi_crate] check-pass + +// Note: compiletest passes some `-Z` flags to the compiler for ui testing purposes, so here we +// instead abuse the fact that `-Z unstable-options` is also part of rustc's stability story and is +// also affected by `RUSTC_BOOTSTRAP`. +//@[force_stable] rustc-env:RUSTC_BOOTSTRAP=-1 +//@[force_stable] compile-flags: -Z unstable-options +//@[force_stable] regex-error-pattern: error: the option `Z` is only accepted on the nightly compiler + +#![crate_type = "lib"] + +// Note: `rustc_attrs` is a perma-unstable internal feature that is unlikely to change, which is +// used as a proxy to check `RUSTC_BOOTSTRAP` versus stability checking logic. +#![feature(rustc_attrs)] |