1 files changed, 21 insertions, 0 deletions
diff --git a/tests/incremental/issue-72386.rs b/tests/incremental/issue-72386.rs
new file mode 100644
index 000000000..5917152e1
--- /dev/null
+++ b/tests/incremental/issue-72386.rs
@@ -0,0 +1,21 @@
+// revisions: rpass1 cfail1 rpass3
+// needs-asm-support
+// only-x86_64
+// Regression test for issue #72386
+// Checks that we don't ICE when switching to an invalid register
+// and back again
+
+use std::arch::asm;
+
+#[cfg(any(rpass1, rpass3))]
+fn main() {
+    unsafe { asm!("nop") }
+}
+
+#[cfg(cfail1)]
+fn main() {
+    unsafe {
+        asm!("nop",out("invalid_reg")_)
+        //[cfail1]~^ ERROR invalid register
+    }
+}