1 files changed, 30 insertions, 0 deletions
diff --git a/tests/assembly-llvm/cstring-merging.rs b/tests/assembly-llvm/cstring-merging.rs
new file mode 100644
index 00000000000..03688e0068b
--- /dev/null
+++ b/tests/assembly-llvm/cstring-merging.rs
@@ -0,0 +1,30 @@
+// MIPS assembler uses the label prefix `$anon.` for local anonymous variables
+// other architectures (including ARM and x86-64) use the prefix `.Lanon.`
+//@ only-linux
+//@ assembly-output: emit-asm
+//@ compile-flags: --crate-type=lib -Copt-level=3 -Cllvm-args=-enable-global-merge=0
+//@ edition: 2024
+
+use std::ffi::CStr;
+
+// CHECK: .section .rodata.str1.{{[12]}},"aMS"
+// CHECK: {{(\.L|\$)}}anon.{{.+}}:
+// CHECK-NEXT: .asciz "foo"
+#[unsafe(no_mangle)]
+static CSTR: &[u8; 4] = b"foo\0";
+
+// CHECK-NOT: .section
+// CHECK: {{(\.L|\$)}}anon.{{.+}}:
+// CHECK-NEXT: .asciz "bar"
+#[unsafe(no_mangle)]
+pub fn cstr() -> &'static CStr {
+    c"bar"
+}
+
+// CHECK-NOT: .section
+// CHECK: {{(\.L|\$)}}anon.{{.+}}:
+// CHECK-NEXT: .asciz "baz"
+#[unsafe(no_mangle)]
+pub fn manual_cstr() -> &'static str {
+    "baz\0"
+}