From 552397a2341e7fc5558461ad006d827a0b3b5ed6 Mon Sep 17 00:00:00 2001
From: k-hara <k.hara.pg@gmail.com>
Date: Thu, 20 Nov 2014 11:21:14 +0900
Subject: [PATCH] fix Issue 13757 - [CTFE] extern(C) alias declaration does not
 work in CTFE

---
 src/interpret.c              |  3 ++-
 test/compilable/interpret3.d | 10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/interpret.c b/src/interpret.c
index e6d2acb58f70..88a1bec94762 100644
--- a/src/interpret.c
+++ b/src/interpret.c
@@ -2636,7 +2636,8 @@ class Interpreter : public Visitor
             {
                 Dsymbol *s = (*ad->decl)[0];
                 if (s->isAggregateDeclaration() ||
-                    s->isTemplateDeclaration())
+                    s->isTemplateDeclaration() ||
+                    s->isAliasDeclaration())
                 {
                     result = NULL;
                     return;         // static (template) struct declaration. Nothing to do.
diff --git a/test/compilable/interpret3.d b/test/compilable/interpret3.d
index 61666cd5f6c5..70f513235f32 100644
--- a/test/compilable/interpret3.d
+++ b/test/compilable/interpret3.d
@@ -4829,6 +4829,16 @@ static assert({
     return true;
 }());
 
+/**************************************************
+    13757 extern(C) alias declaration
+**************************************************/
+
+static assert({
+    alias FP1 = extern(C) int function();
+    alias extern(C) int function() FP2;
+    return true;
+}());
+
 /**************************************************
     6522 opAssign + foreach ref
 **************************************************/