gccrs: proc macro: Add crate type regression tests

Add several tests to prevent regression with proc_macro,
proc_macro_derive and proc_macro_attribute attributes error messages.

gcc/testsuite/ChangeLog:

	* rust/compile/proc_macro_attribute_crate_type.rs: New test.
	* rust/compile/proc_macro_crate_type.rs: New test.
	* rust/compile/proc_macro_derive_crate_type.rs: New test.

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

diff --git a/gcc/testsuite/rust/compile/proc_macro_attribute_crate_type.rs b/gcc/testsuite/rust/compile/proc_macro_attribute_crate_type.rs
new file mode 100644 (file)
index 0000000..9ffd2b0
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_attribute_crate_type.rs
@@ -0,0 +1,4 @@
+// { dg-additional-options "-frust-crate-type=lib" }
+
+#[proc_macro_attribute] // { dg-excess-errors "the '#\[proc_macro_attribute\]' attribute is only usable with crates of the 'proc-macro' crate type" }
+pub fn my_invalid_macro() {}

diff --git a/gcc/testsuite/rust/compile/proc_macro_crate_type.rs b/gcc/testsuite/rust/compile/proc_macro_crate_type.rs
new file mode 100644 (file)
index 0000000..f27a94a
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_crate_type.rs
@@ -0,0 +1,4 @@
+// { dg-additional-options "-frust-crate-type=lib" }
+
+#[proc_macro] // { dg-excess-errors "the '#\[proc_macro\]' attribute is only usable with crates of the 'proc-macro' crate type" }
+pub fn my_invalid_macro() {}

diff --git a/gcc/testsuite/rust/compile/proc_macro_derive_crate_type.rs b/gcc/testsuite/rust/compile/proc_macro_derive_crate_type.rs
new file mode 100644 (file)
index 0000000..20f6997
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_derive_crate_type.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=lib" }
+
+trait Dungeness {}
+
+#[proc_macro_derive(Dungeness)] // { dg-excess-errors "the '#\[proc_macro_derive\]' attribute is only usable with crates of the 'proc-macro' crate type" }
+pub fn my_invalid_macro() {}