1 files changed, 15 insertions, 0 deletions
diff --git a/tests/run-pass-valgrind/coerce-match-calls.rs b/tests/run-pass-valgrind/coerce-match-calls.rs
new file mode 100644
index 000000000..60943aad8
--- /dev/null
+++ b/tests/run-pass-valgrind/coerce-match-calls.rs
@@ -0,0 +1,15 @@
+// Check that coercions are propagated through match and if expressions.
+
+// pretty-expanded FIXME #23616
+
+use std::boxed::Box;
+
+pub fn main() {
+    let _: Box<[isize]> = if true { Box::new([1, 2, 3]) } else { Box::new([1]) };
+
+    let _: Box<[isize]> = match true { true => Box::new([1, 2, 3]), false => Box::new([1]) };
+
+    // Check we don't get over-keen at propagating coercions in the case of casts.
+    let x = if true { 42 } else { 42u8 } as u16;
+    let x = match true { true => 42, false => 42u8 } as u16;
+}