... builtin macro and decl macro mixed expansion
gcc/testsuite/ChangeLog:
* rust/compile/builtin_macro_recurse.rs: New test.
Signed-off-by: Zixing Liu <liushuyu011@gmail.com>
--- /dev/null
+// { dg-additional-options "-fdump-tree-gimple" }
+
+#[rustc_builtin_macro]
+macro_rules! concat {
+ () => {{}};
+}
+
+macro_rules! a {
+ () => { "test" };
+}
+
+macro_rules! b {
+ () => { "canary" };
+}
+
+fn main() {
+ // { dg-final { scan-tree-dump-times {"test1canary"} 1 gimple } }
+ let _ = concat!(a!(), 1, b!());
+ // should not error
+ concat!(a!(), true, b!(),);
+}