1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/repr/issue-83921-ice.rs b/src/test/ui/repr/issue-83921-ice.rs
new file mode 100644
index 000000000..70583eb9b
--- /dev/null
+++ b/src/test/ui/repr/issue-83921-ice.rs
@@ -0,0 +1,34 @@
+// Regression test for various ICEs inspired by
+// https://github.com/rust-lang/rust/issues/83921#issuecomment-814640734
+
+// compile-flags: -Zdeduplicate-diagnostics=yes
+
+#[repr(packed())]
+//~^ ERROR: incorrect `repr(packed)` attribute format
+struct S1;
+
+#[repr(align)]
+//~^ ERROR: invalid `repr(align)` attribute
+struct S2;
+
+#[repr(align(2, 4))]
+//~^ ERROR: incorrect `repr(align)` attribute format
+struct S3;
+
+#[repr(align())]
+//~^ ERROR: incorrect `repr(align)` attribute format
+struct S4;
+
+#[repr(i8())]
+//~^ ERROR: invalid representation hint
+enum E1 { A, B }
+
+#[repr(u32(42))]
+//~^ ERROR: invalid representation hint
+enum E2 { A, B }
+
+#[repr(i64 = 2)]
+//~^ ERROR: invalid representation hint
+enum E3 { A, B }
+
+fn main() {}