Allow doc comments on individual struct members, faultdefs and enum values #2427.

test/test_suite/errors/contracts_in_defs.c3

@@ -0,0 +1,41 @@
+module test;
+import std;
+
+struct Foo
+{
+	<* hello *>
+	int a;
+	<* test *>
+	union
+	{
+		<* test2 *>
+		int b;
+	}
+	struct foo
+	{
+		<* baz *>
+		int g;
+	}
+}
+
+faultdef <* hello *> FOO;
+enum Abc
+{
+	<* test *>
+	XYZ
+}
+
+faultdef <* @require a > 0 *> FOO2; // #error: No constraints are allowed on faults
+enum Abc2
+{
+	<* @require a > 0 *> // #error: No constraints are allowed on enum values
+	XYZ
+}
+struct Test
+{
+	<* @require a > 0 *> // #error: No constraints are allowed on struct/union members
+	int a;
+}
+
+fn void main()
+{}