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-rw-r--r--tests/incremental/issue-42602.rs44
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diff --git a/tests/incremental/issue-42602.rs b/tests/incremental/issue-42602.rs
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+// Regression test for #42602. It used to be that we had
+// a dep-graph like
+//
+// typeck(foo) -> FnOnce -> typeck(bar)
+//
+// This was fixed by improving the resolution of the `FnOnce` trait
+// selection node.
+
+// revisions:cfail1 cfail2 cfail3
+// compile-flags:-Zquery-dep-graph
+// build-pass (FIXME(62277): could be check-pass?)
+
+#![feature(rustc_attrs)]
+
+fn main() {
+ a::foo();
+ b::bar();
+}
+
+mod a {
+ #[cfg(cfail1)]
+ pub fn foo() {
+ let x = vec![1, 2, 3];
+ let v = || ::std::mem::drop(x);
+ v();
+ }
+
+ #[cfg(not(cfail1))]
+ pub fn foo() {
+ let x = vec![1, 2, 3, 4];
+ let v = || ::std::mem::drop(x);
+ v();
+ }
+}
+
+mod b {
+ #[rustc_clean(cfg="cfail2")]
+ #[rustc_clean(cfg="cfail3")]
+ pub fn bar() {
+ let x = vec![1, 2, 3];
+ let v = || ::std::mem::drop(x);
+ v();
+ }
+}