gccrs: Add box definition to avoid error

Box definition is part of the standard library and cannot be found during
name resolution. This simple definition prevent any error from being
emitted.

gcc/testsuite/ChangeLog:

	* rust/compile/box_syntax_feature_gate.rs: Add box land item
	definition.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

diff --git a/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs b/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs
index 8eb5503dde6c7d35c2a7fec73f140abb1b0e25b2..5f62a59a04bf937df546d1915b2da847c7bafd5f 100644 (file)
--- a/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs
+++ b/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs
@@ -1,4 +1,6 @@
 // { dg-options "-frust-compile-until=lowering" }
+#[lang = "owned_box"]
+pub struct Box<T>;
 
 fn main() {
     let x: Box<_> = box 1; //{ dg-error "box expression syntax is experimental." "" { target *-*-* }  }