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-rw-r--r--tests/codegen/issues/issue-98156-const-arg-temp-lifetime.rs27
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/codegen/issues/issue-98156-const-arg-temp-lifetime.rs b/tests/codegen/issues/issue-98156-const-arg-temp-lifetime.rs
new file mode 100644
index 000000000..12ace5fff
--- /dev/null
+++ b/tests/codegen/issues/issue-98156-const-arg-temp-lifetime.rs
@@ -0,0 +1,27 @@
+// This test checks that temporaries for indirectly-passed arguments get lifetime markers.
+
+// compile-flags: -O -C no-prepopulate-passes -Zmir-opt-level=0
+
+#![crate_type = "lib"]
+
+extern "Rust" {
+ fn f(x: [u8; 1024]);
+}
+
+const A: [u8; 1024] = [0; 1024];
+
+// CHECK-LABEL: @const_arg_indirect
+#[no_mangle]
+pub unsafe fn const_arg_indirect() {
+ // Ensure that the live ranges for the two argument temporaries don't overlap.
+
+ // CHECK: call void @llvm.lifetime.start
+ // CHECK: call void @f
+ // CHECK: call void @llvm.lifetime.end
+ // CHECK: call void @llvm.lifetime.start
+ // CHECK: call void @f
+ // CHECK: call void @llvm.lifetime.end
+
+ f(A);
+ f(A);
+}