From 1a867dc346a0b9ea5abd8a8504f1908f42ff2dd2 Mon Sep 17 00:00:00 2001
From: "Havvy (Ryan Scheel)" <ryan.havvy@gmail.com>
Date: Mon, 10 Sep 2018 15:06:49 -0700
Subject: cfg_attr_multi: Basic implementation

Does not implement the warning or a feature flag.
---
 .../ui/conditional-compilation/cfg-attr-parse.rs   | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/test/ui/conditional-compilation/cfg-attr-parse.rs

(limited to 'src/test/ui/conditional-compilation/cfg-attr-parse.rs')

diff --git a/src/test/ui/conditional-compilation/cfg-attr-parse.rs b/src/test/ui/conditional-compilation/cfg-attr-parse.rs
new file mode 100644
index 00000000000..eec0e8faca8
--- /dev/null
+++ b/src/test/ui/conditional-compilation/cfg-attr-parse.rs
@@ -0,0 +1,45 @@
+// Parse `cfg_attr` with varying numbers of attributes and trailing commas
+
+#![feature(cfg_attr_multi)]
+
+// Completely empty `cfg_attr` input
+#[cfg_attr()] //~ error: expected identifier, found `)`
+struct NoConfigurationPredicate;
+
+// Zero attributes, zero trailing comma (comma manatory here)
+#[cfg_attr(all())] //~ error: expected `,`, found `)`
+struct A0C0;
+
+// Zero attributes, one trailing comma
+#[cfg_attr(all(),)] // Ok
+struct A0C1;
+
+// Zero attributes, two trailing commas
+#[cfg_attr(all(),,)] //~ ERROR expected identifier
+struct A0C2;
+
+// One attribute, no trailing comma
+#[cfg_attr(all(), must_use)] // Ok
+struct A1C0;
+
+// One attribute, one trailing comma
+#[cfg_attr(all(), must_use,)] // Ok
+struct A1C1;
+
+// One attribute, two trailing commas
+#[cfg_attr(all(), must_use,,)] //~ ERROR expected identifier
+struct A1C2;
+
+// Two attributes, no trailing comma
+#[cfg_attr(all(), must_use, deprecated)] // Ok
+struct A2C0;
+
+// Two attributes, one trailing comma
+#[cfg_attr(all(), must_use, deprecated,)] // Ok
+struct A2C1;
+
+// Two attributes, two trailing commas
+#[cfg_attr(all(), must_use, deprecated,,)] //~ ERROR expected identifier
+struct A2C2;
+
+fn main() {}
-- 
cgit 1.4.1-3-g733a5