1 files changed, 80 insertions, 0 deletions
diff --git a/tests/ui/conflicting-repr-hints.rs b/tests/ui/conflicting-repr-hints.rs
new file mode 100644
index 00000000000..ed82b6a742c
--- /dev/null
+++ b/tests/ui/conflicting-repr-hints.rs
@@ -0,0 +1,80 @@
+#![allow(dead_code)]
+
+#[repr(C)]
+enum A {
+    A,
+}
+
+#[repr(u64)]
+enum B {
+    B,
+}
+
+#[repr(C, u64)] //~ ERROR conflicting representation hints
+//~^ WARN this was previously accepted
+enum C {
+    C,
+}
+
+#[repr(u32, u64)] //~ ERROR conflicting representation hints
+//~^ WARN this was previously accepted
+enum D {
+    D,
+}
+
+#[repr(C, packed)]
+struct E(i32);
+
+#[repr(packed, align(8))]
+struct F(i32); //~ ERROR type has conflicting packed and align representation hints
+
+#[repr(packed)]
+#[repr(align(8))]
+struct G(i32); //~ ERROR type has conflicting packed and align representation hints
+
+#[repr(align(8))]
+#[repr(packed)]
+struct H(i32); //~ ERROR type has conflicting packed and align representation hints
+
+#[repr(packed, packed(2))]
+struct I(i32); //~ ERROR type has conflicting packed representation hints
+
+#[repr(packed(2))]
+#[repr(packed)]
+struct J(i32); //~ ERROR type has conflicting packed representation hints
+
+#[repr(packed, packed(1))]
+struct K(i32);
+
+#[repr(packed, align(8))]
+union X {
+    //~^ ERROR type has conflicting packed and align representation hints
+    i: i32,
+}
+
+#[repr(packed)]
+#[repr(align(8))]
+union Y {
+    //~^ ERROR type has conflicting packed and align representation hints
+    i: i32,
+}
+
+#[repr(align(8))]
+#[repr(packed)]
+union Z {
+    //~^ ERROR type has conflicting packed and align representation hints
+    i: i32,
+}
+
+#[repr(packed, align(0x100))]
+pub struct S(u16); //~ ERROR type has conflicting packed and align representation hints
+
+#[repr(packed, align(0x100))]
+pub union U { //~ ERROR type has conflicting packed and align representation hints
+    u: u16
+}
+
+static B: U = U { u: 0 };
+static A: S = S(0);
+
+fn main() {}