tests: Test line debuginfo for linebreaked function parameters

Author: Enselic

tests/codegen/fn-parameters-on-different-lines-debuginfo.rs

@@ -0,0 +1,18 @@
+//! Make sure that line debuginfo of function parameters are correct even if
+//! they are not on the same line. Regression test for
+// <https://github.com/rust-lang/rust/issues/45010>.
+
+//@ compile-flags: -g -Copt-level=0
+
+#![crate_type = "dylib"]
+#[rustfmt::skip] // Having parameters on different lines is crucial for this test.
+pub fn foo(
+    x: i32,
+    y: i32)
+    -> i32
+{ x + y }
+
+// CHECK: !DILocalVariable(name: "x", arg: 1,
+// CHECK-SAME: line: 10
+// CHECK: !DILocalVariable(name: "y", arg: 2,
+// CHECK-SAME: line: 11