diff options
| author | Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> | 2023-10-02 12:32:31 +0000 |
|---|---|---|
| committer | Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> | 2024-01-10 21:18:54 +0100 |
| commit | da26317a8a69fed3f7b96457c643121e75954933 (patch) | |
| tree | 22c13161c8a62b9557bdd713d0e4911b7522d612 /tests/ui/lang-items | |
| parent | a2d9d73e608f1b24eba840c4fd2d68dbe3b65e01 (diff) | |
| download | rust-da26317a8a69fed3f7b96457c643121e75954933.tar.gz rust-da26317a8a69fed3f7b96457c643121e75954933.zip | |
Stop mentioning internal lang items in no_std binary errors
When writing a no_std binary, you'll be greeted with nonsensical errors mentioning lang items like eh_personality and start. That's pretty bad because it makes you think that you need to define them somewhere! But oh no, now you're getting the `internal_features` lint telling you that you shouldn't use them! But you need a no_std binary! What now? No problem! Writing a no_std binary is super easy. Just use panic=abort and supply your own platform specific entrypoint symbol (like `main`) and you're good to go. Would be nice if the compiler told you that, right? This makes it so that it does do that.
Diffstat (limited to 'tests/ui/lang-items')
| -rw-r--r-- | tests/ui/lang-items/required-lang-item.rs | 7 | ||||
| -rw-r--r-- | tests/ui/lang-items/required-lang-item.stderr | 6 |
2 files changed, 8 insertions, 5 deletions
diff --git a/tests/ui/lang-items/required-lang-item.rs b/tests/ui/lang-items/required-lang-item.rs index 3b17c5b7255..7f8933ac2ad 100644 --- a/tests/ui/lang-items/required-lang-item.rs +++ b/tests/ui/lang-items/required-lang-item.rs @@ -1,11 +1,10 @@ -// build-fail +// edition: 2018 #![feature(lang_items, no_core)] #![no_core] +#![no_main] #[lang="copy"] pub trait Copy { } #[lang="sized"] pub trait Sized { } -// error-pattern:requires `start` lang_item - -fn main() {} +async fn x() {} //~ ERROR requires `ResumeTy` lang_item diff --git a/tests/ui/lang-items/required-lang-item.stderr b/tests/ui/lang-items/required-lang-item.stderr index bb53d336bb2..13c07ee6529 100644 --- a/tests/ui/lang-items/required-lang-item.stderr +++ b/tests/ui/lang-items/required-lang-item.stderr @@ -1,4 +1,8 @@ -error: requires `start` lang_item +error: requires `ResumeTy` lang_item + --> $DIR/required-lang-item.rs:10:14 + | +LL | async fn x() {} + | ^^ error: aborting due to 1 previous error |