From 21659b6a5d6445c3f8d9f20b58a672c829665eaa Mon Sep 17 00:00:00 2001
From: Alexey Prokhin <alexey.prokhin@yandex.ru>
Date: Tue, 4 Jan 2011 19:06:25 +0300
Subject: [PATCH] Check in DtoNestedVariable() whether the needed frame can be
 accessed

---
 gen/nested.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/gen/nested.cpp b/gen/nested.cpp
index a55c1dba..973187ae 100644
--- a/gen/nested.cpp
+++ b/gen/nested.cpp
@@ -100,6 +100,17 @@ DValue* DtoNestedVariable(Loc loc, Type* astype, VarDeclaration* vd, bool byref)
     assert(vdparent);
     
     IrFunction* irfunc = gIR->func();
+
+    // Check whether we can access the needed frame
+    FuncDeclaration *fd = irfunc->decl;
+    while (fd != vdparent) {
+        if (fd->isStatic()) {
+            error(loc, "function %s cannot access frame of function %s", irfunc->decl->toPrettyChars(), vdparent->toPrettyChars());
+            return new DVarValue(astype, vd, llvm::UndefValue::get(getPtrToType(DtoType(astype))));
+        }
+        fd = getParentFunc(fd, false);
+        assert(fd);
+    }
     
     // is the nested variable in this scope?
     if (vdparent == irfunc->decl)