diff options
| -rw-r--r-- | src/bootstrap/compile.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs index 8b80dfc0f9b..54971af644c 100644 --- a/src/bootstrap/compile.rs +++ b/src/bootstrap/compile.rs @@ -339,6 +339,12 @@ pub fn std_cargo(builder: &Builder<'_>, target: TargetSelection, stage: u32, car "" }; + // `libtest` uses this to know whether or not to support + // `-Zunstable-options`. + if !builder.unstable_features() { + cargo.env("CFG_DISABLE_UNSTABLE_FEATURES", "1"); + } + let mut features = String::new(); // Cranelift doesn't support `asm`. |