X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=library%2Fstd%2Fsrc%2Fprocess.rs;h=400d25beb26f3d521387b5933e8a30ab6d1507b2;hb=00876c68c46d892790957931384d15d643de32fa;hp=b8249a027ad99445cc90a0f51f749b3ba12f7a93;hpb=98a5ac269cffada469753ad2416717e251863f9a;p=rust.git

diff --git a/library/std/src/process.rs b/library/std/src/process.rs
index b8249a027ad..400d25beb26 100644
--- a/library/std/src/process.rs
+++ b/library/std/src/process.rs
@@ -2154,8 +2154,16 @@ pub fn id() -> u32 {
 #[cfg_attr(not(test), lang = "termination")]
 #[stable(feature = "termination_trait_lib", since = "1.61.0")]
 #[rustc_on_unimplemented(
-    message = "`main` has invalid return type `{Self}`",
-    label = "`main` can only return types that implement `{Termination}`"
+    on(
+        all(not(bootstrap), cause = "MainFunctionType"),
+        message = "`main` has invalid return type `{Self}`",
+        label = "`main` can only return types that implement `{Termination}`"
+    ),
+    on(
+        bootstrap,
+        message = "`main` has invalid return type `{Self}`",
+        label = "`main` can only return types that implement `{Termination}`"
+    )
 )]
 pub trait Termination {
     /// Is called to get the representation of the value as status code.