diff options
| -rw-r--r-- | src/tools/miri/cargo-miri/src/main.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/tools/miri/cargo-miri/src/main.rs b/src/tools/miri/cargo-miri/src/main.rs index 85c9cdad7df..6178670b4f0 100644 --- a/src/tools/miri/cargo-miri/src/main.rs +++ b/src/tools/miri/cargo-miri/src/main.rs @@ -80,7 +80,11 @@ fn main() { match first.as_str() { "miri" => phase_cargo_miri(args), "runner" => phase_runner(args, RunnerPhase::Cargo), - arg if arg == env::var("RUSTC").unwrap() => { + arg if arg == env::var("RUSTC").unwrap_or_else(|_| { + show_error!( + "`cargo-miri` called without RUSTC set; please only invoke this binary through `cargo miri`" + ) + }) => { // If the first arg is equal to the RUSTC env variable (which should be set at this // point), then we need to behave as rustc. This is the somewhat counter-intuitive // behavior of having both RUSTC and RUSTC_WRAPPER set |