From e9ec47bb70810f972e6565d496120b0b00f261f0 Mon Sep 17 00:00:00 2001
From: Aaron Hill <aa1ronham@gmail.com>
Date: Wed, 19 Feb 2020 10:45:21 -0500
Subject: [PATCH] Test that stmt_expr_attrs properly gates if-attrs

---
 src/test/ui/parser/if-attrs/stmt-expr-gated.rs     |  6 ++++++
 src/test/ui/parser/if-attrs/stmt-expr-gated.stderr | 12 ++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 src/test/ui/parser/if-attrs/stmt-expr-gated.rs
 create mode 100644 src/test/ui/parser/if-attrs/stmt-expr-gated.stderr

diff --git a/src/test/ui/parser/if-attrs/stmt-expr-gated.rs b/src/test/ui/parser/if-attrs/stmt-expr-gated.rs
new file mode 100644
index 000000000000..38599c8e67c4
--- /dev/null
+++ b/src/test/ui/parser/if-attrs/stmt-expr-gated.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let _ = #[deny(warnings)] if true { //~ ERROR attributes on expressions
+    } else if false {
+    } else {
+    };
+}
diff --git a/src/test/ui/parser/if-attrs/stmt-expr-gated.stderr b/src/test/ui/parser/if-attrs/stmt-expr-gated.stderr
new file mode 100644
index 000000000000..47dac39a9ae8
--- /dev/null
+++ b/src/test/ui/parser/if-attrs/stmt-expr-gated.stderr
@@ -0,0 +1,12 @@
+error[E0658]: attributes on expressions are experimental
+  --> $DIR/stmt-expr-gated.rs:2:13
+   |
+LL |     let _ = #[deny(warnings)] if true {
+   |             ^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
+   = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.