gccrs: Handle crate metavariable

gcc/rust/ChangeLog:

	* expand/rust-macro-substitute-ctx.cc
	(SubstituteCtx::substitute_metavar): Substitute crate metavar.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

diff --git a/gcc/rust/expand/rust-macro-substitute-ctx.cc b/gcc/rust/expand/rust-macro-substitute-ctx.cc
index ed7cf1b2ab507fe9e489f8fcaaf0480476e08300..60e9b63de9470100b2bc6de8d82d539928b4f566 100644 (file)
--- a/gcc/rust/expand/rust-macro-substitute-ctx.cc
+++ b/gcc/rust/expand/rust-macro-substitute-ctx.cc
@@ -31,7 +31,13 @@ SubstituteCtx::substitute_metavar (
   if (it == fragments.end ())
     {
       // fail to substitute
-      return false;
+
+      // HACK: substitute ($ crate) => (crate)
+      if (metavar->get_id () != CRATE)
+       return false;
+
+      expanded.push_back (metavar->clone_token ());
+      return true;
     }
   else
     {