Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs
new file mode 100644
index 000000000..900dfff65
--- /dev/null
+++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs
@@ -0,0 +1,37 @@
+// aux-build:uninhabited.rs
+#![deny(unreachable_patterns)]
+#![feature(exhaustive_patterns)]
+#![feature(never_type)]
+
+extern crate uninhabited;
+
+use uninhabited::{
+    UninhabitedEnum,
+    UninhabitedStruct,
+    UninhabitedTupleStruct,
+    UninhabitedVariants,
+};
+
+struct A;
+
+// This test checks that an empty match on a non-exhaustive uninhabited type from an extern crate
+// will not compile. In particular, this enables the `exhaustive_patterns` feature as this can
+// change the branch used in the compiler to determine this.
+
+fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A {
+    match x {} //~ ERROR non-exhaustive patterns
+}
+
+fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A {
+    match x {} //~ ERROR non-exhaustive patterns
+}
+
+fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A {
+    match x {} //~ ERROR non-exhaustive patterns
+}
+
+fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A {
+    match x {} //~ ERROR non-exhaustive patterns
+}
+
+fn main() {}