1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/offset-of/offset-of-tuple-field.rs b/tests/ui/offset-of/offset-of-tuple-field.rs
new file mode 100644
index 00000000000..02d41f91a25
--- /dev/null
+++ b/tests/ui/offset-of/offset-of-tuple-field.rs
@@ -0,0 +1,22 @@
+#![feature(builtin_syntax)]
+
+use std::mem::offset_of;
+
+fn main() {
+    offset_of!((u8, u8), _0); //~ ERROR no field `_0`
+    offset_of!((u8, u8), 01); //~ ERROR no field `01`
+    offset_of!((u8, u8), 1e2); //~ ERROR no field `1e2`
+    offset_of!((u8, u8), 1_u8); //~ ERROR no field `1_`
+    //~| ERROR suffixes on a tuple index
+
+    builtin # offset_of((u8, u8), 1e2); //~ ERROR no field `1e2`
+    builtin # offset_of((u8, u8), _0); //~ ERROR no field `_0`
+    builtin # offset_of((u8, u8), 01); //~ ERROR no field `01`
+    builtin # offset_of((u8, u8), 1_u8); //~ ERROR no field `1_`
+    //~| ERROR suffixes on a tuple index
+
+    offset_of!(((u8, u16), (u32, u16, u8)), 0.2); //~ ERROR no field `2`
+    offset_of!(((u8, u16), (u32, u16, u8)), 0.1e2); //~ ERROR no field `1e2`
+    offset_of!(((u8, u16), (u32, u16, u8)), 1.2);
+    offset_of!(((u8, u16), (u32, u16, u8)), 1.2.0); //~ ERROR no field `0`
+}