1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/const_prop/inline_spans.rs b/src/test/ui/const_prop/inline_spans.rs
new file mode 100644
index 000000000..504f27811
--- /dev/null
+++ b/src/test/ui/const_prop/inline_spans.rs
@@ -0,0 +1,15 @@
+// build-pass
+// compile-flags: -Zmir-opt-level=3
+// Overflow can't be detected by const prop
+// could only be detected after optimizations
+
+#![deny(warnings)]
+
+fn main() {
+    let _ = add(u8::MAX, 1);
+}
+
+#[inline(always)]
+fn add(x: u8, y: u8) -> u8 {
+    x + y
+}