about summary refs log tree commit diff
path: root/tests/ui/try-trait/try-operator-on-main.rs
diff options
context:
space:
mode:
Diffstat (limited to 'tests/ui/try-trait/try-operator-on-main.rs')
-rw-r--r--tests/ui/try-trait/try-operator-on-main.rs22
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/try-trait/try-operator-on-main.rs b/tests/ui/try-trait/try-operator-on-main.rs
new file mode 100644
index 00000000000..3b364f7e7d3
--- /dev/null
+++ b/tests/ui/try-trait/try-operator-on-main.rs
@@ -0,0 +1,22 @@
+#![feature(try_trait_v2)]
+
+use std::ops::Try;
+
+fn main() {
+    // error for a `Try` type on a non-`Try` fn
+    std::fs::File::open("foo")?; //~ ERROR the `?` operator can only
+
+    // a non-`Try` type on a non-`Try` fn
+    ()?; //~ ERROR the `?` operator can only be applied to
+    //~^ ERROR the `?` operator can only be used in a function that
+
+    // an unrelated use of `Try`
+    try_trait_generic::<()>(); //~ ERROR the trait bound
+}
+
+fn try_trait_generic<T: Try>() -> T {
+    // and a non-`Try` object on a `Try` fn.
+    ()?; //~ ERROR the `?` operator can only be applied to values that implement `Try`
+
+    loop {}
+}