1 files changed, 23 insertions, 0 deletions
diff --git a/tests/codegen-llvm/inline-function-args-debug-info.rs b/tests/codegen-llvm/inline-function-args-debug-info.rs
new file mode 100644
index 00000000000..c31419cb914
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+++ b/tests/codegen-llvm/inline-function-args-debug-info.rs
@@ -0,0 +1,23 @@
+// This test checks that debug information includes function argument indexes even if the function
+// gets inlined by MIR inlining. Without function argument indexes, `info args` in gdb won't show
+// arguments and their values for the current function.
+
+//@ compile-flags: -Zinline-mir=yes -Cdebuginfo=2
+//@ edition: 2021
+
+#![crate_type = "lib"]
+
+#[inline(never)]
+pub fn outer_function(x: usize, y: usize) -> usize {
+    inner_function(x, y) + 1
+}
+
+#[inline]
+fn inner_function(aaaa: usize, bbbb: usize) -> usize {
+    // CHECK: !DILocalVariable(name: "aaaa", arg: 1
+    // CHECK-SAME: line: 16
+    // CHECK-NOT: !DILexicalBlock(
+    // CHECK: !DILocalVariable(name: "bbbb", arg: 2
+    // CHECK-SAME: line: 16
+    aaaa + bbbb
+}