From 394a58a084386613e19636e84a4cfc024e224b2d Mon Sep 17 00:00:00 2001
From: k-hara <k.hara.pg@gmail.com>
Date: Sun, 29 Jun 2014 10:46:34 +0900
Subject: [PATCH] fix Issue 12981 - Can't refer to 'outer' from mixin template

---
 src/declaration.c      |  3 ++-
 src/mtype.c            |  2 ++
 test/runnable/nested.d | 18 ++++++++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/declaration.c b/src/declaration.c
index 642da52cb49d..b4c404c66604 100644
--- a/src/declaration.c
+++ b/src/declaration.c
@@ -2111,7 +2111,8 @@ bool VarDeclaration::isDataseg()
         return false;
     Dsymbol *parent = this->toParent();
     if (!parent && !(storage_class & STCstatic))
-    {   error("forward referenced");
+    {
+        error("forward referenced");
         type = Type::terror;
         return false;
     }
diff --git a/src/mtype.c b/src/mtype.c
index 8820b716cd2c..0d7ec0bd8c98 100644
--- a/src/mtype.c
+++ b/src/mtype.c
@@ -8524,6 +8524,8 @@ Expression *TypeClass::dotExp(Scope *sc, Expression *e, Identifier *ident, int f
         }
         if (ident == Id::outer && sym->vthis)
         {
+            if (sym->vthis->scope)
+                sym->vthis->semantic(NULL);
             s = sym->vthis;
         }
         else
diff --git a/test/runnable/nested.d b/test/runnable/nested.d
index 3bba9357ef17..745f2944b335 100644
--- a/test/runnable/nested.d
+++ b/test/runnable/nested.d
@@ -2383,6 +2383,24 @@ void test12234()
     assert(b.a == 1);
 }
 
+/*******************************************/
+// 12981
+
+template Mix12981(T)
+{
+    class A
+    {
+        alias typeof(this.outer) x;
+    }
+}
+
+class B12981
+{
+    mixin Mix12981!(int);
+
+    static assert(is(A.x == B12981));
+}
+
 /*******************************************/
 
 int main()