Feature-gate #[no_debug] and #[omit_gdb_pretty_printer_section]

Closes #28091.

Author: apasel422

src/libsyntax/feature_gate.rs

@@ -197,6 +197,12 @@ const KNOWN_FEATURES: &'static [(&'static str, &'static str, Option<u32>, Status
 
     // allow overloading augmented assignment operations like `a += b`
     ("augmented_assignments", "1.5.0", None, Active),
+
+    // allow `#[no_debug]`
+    ("no_debug", "1.5.0", None, Active),
+
+    // allow `#[omit_gdb_pretty_printer_section]`
+    ("omit_gdb_pretty_printer_section", "1.5.0", None, Active),
 ];
 // (changing above list without updating src/doc/reference.md makes @cmr sad)
 
@@ -320,8 +326,13 @@ pub const KNOWN_ATTRIBUTES: &'static [(&'static str, AttributeType, AttributeGat
     ("link_section", Whitelisted, Ungated),
     ("no_builtins", Whitelisted, Ungated),
     ("no_mangle", Whitelisted, Ungated),
-    ("no_debug", Whitelisted, Ungated),
-    ("omit_gdb_pretty_printer_section", Whitelisted, Ungated),
+    ("no_debug", Whitelisted, Gated("no_debug",
+                                    "the `#[no_debug]` attribute \
+                                     is an experimental feature")),
+    ("omit_gdb_pretty_printer_section", Whitelisted, Gated("omit_gdb_pretty_printer_section",
+                                                       "the `#[omit_gdb_pretty_printer_section]` \
+                                                        attribute is just used for the Rust test \
+                                                        suite")),
     ("unsafe_no_drop_flag", Whitelisted, Gated("unsafe_no_drop_flag",
                                                "unsafe_no_drop_flag has unstable semantics \
                                                 and may be removed in the future")),

src/test/auxiliary/cross_crate_spans.rs

@@ -11,6 +11,7 @@
 #![crate_type = "rlib"]
 
 #![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 // no-prefer-dynamic

src/test/compile-fail/feature-gate-no-debug.rs

@@ -0,0 +1,12 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[no_debug] //~ ERROR the `#[no_debug]` attribute is
+fn main() {}

src/test/compile-fail/feature-gate-omit-gdb-pretty-printer-section.rs

@@ -0,0 +1,12 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[omit_gdb_pretty_printer_section] //~ ERROR the `#[omit_gdb_pretty_printer_section]` attribute is
+fn main() {}

src/test/debuginfo/associated-types.rs

@@ -80,6 +80,7 @@
 
 #![allow(unused_variables)]
 #![allow(dead_code)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 trait TraitWithAssocType {

src/test/debuginfo/basic-types-globals-metadata.rs

@@ -44,6 +44,7 @@
 
 #![allow(unused_variables)]
 #![allow(dead_code)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 // N.B. These are `mut` only so they don't constant fold away.

src/test/debuginfo/basic-types-globals.rs

@@ -49,6 +49,7 @@
 // gdb-command:continue
 
 #![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 // N.B. These are `mut` only so they don't constant fold away.

src/test/debuginfo/basic-types-metadata.rs

@@ -64,6 +64,7 @@
 // gdb-command:continue
 
 #![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 fn main() {

src/test/debuginfo/basic-types-mut-globals.rs

@@ -82,6 +82,7 @@
 // gdb-check:$28 = 9.25
 
 #![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 static mut B: bool = false;

src/test/debuginfo/basic-types.rs

@@ -87,6 +87,7 @@
 // lldb-check:[...]$12 = 3.5
 
 #![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
 
 fn main() {